So extremely rare to see on TH-cam someone explain something without the fluff and unnecessary drama to make you watch a 10 min video. Give this man a GOLD TH-cam play button NOW. But the sad fact is TH-cam reward those who game the system, weird isn't it.
My first step is clean the throttle body and plate. I have no doubt this can cause the sticky acceleration. Throttle body spray cleaner is not real pricy
Agree, always like finding simple little videos like this that give me a gist of what to do. Though, in some instances, longer, more drawn out *tutorials* can be appreciated
I cleaned mine, and it worked for another 5 months, but the problem came back. I performed this test and the engine kept running. Thank you for creating this video! So at this point it is likely to be a bad MAF sensor.
I have been trying to figure out what was wrong with my wife's Malibu for months. Came across this and I will be damned. Changed MAF sensor on 2011 Malibu and now it's purring. No engine codes. God bless you for helping discover the fix and for helping me save money.
Thank you a million times for this vid. My 2004 F250 5.4, bought new, was having issues losing power uphill and under load at 85K mileage. Took it to four mechanics over the last 1.5 years. No one could figure it out. One told me the truck's engine wasn't powerful enough and that's just the way it was built. Not! I've driven and towed with this truck since 2004 and never before had this problem. The most recent mechanic at a Ford dealer said it was the transmission and wanted to take me down that rabbit hole but I intuitively knew that wasn't the problem. I had already taken it to a good transmission specialist and he found nothing wrong with the transmission. But, then I found your vid and, sure enough, the sensor was bad! $140 cost to replace and I am now driving with no power loss and ability to tow my horse trailer up hill on the Interstate beautifully. Just as it was built to do!
@@jwillzcommonsence8870maybe if you get aftermarket BS. I ordered a Duralast and it came all mismanufactured and in horrible condition for $99.....I ordered the FACTORY OEM mass air sensor directly from Mitsubishi for $150 and it came in PERFECT matching condition and my car now runs much much much better, almost like new...... 244,000 miles on it!
Who's the know-it-all true dummshid? ⬇️⬇️⬇️⬇️⬇️⬇️⬇️@@jwillzcommonsence8870 A genuine MAF sensor should almost always be a dealer part or if you can find a genuine, OEM one online somewhere else for a bit cheaper and they always are a bit expensive. As the man said, $140 sounds right. Mine was $118. I imagine if the rest of us got one of the most vital parts for our vehicle at Kmart, or Temu or where ever it is you shop, we would have got it for 20 bucks also. You left that comment thinking "these people are idiots" and looks like you're the real genius here, no doubt. I wonder where that sensor of yours, the new one, wonder where it was made. Wonder what's the brand? Don't bother. No brand Ebay shid, made in Taiwan, most likely, or dare I say, China.....? You're a winner today!!! Reply back to discover what you've won and how to claim your prize!!
I'm gonna be 100% honest and say that I figured pulling the cord on a sensor in general would stop the engine anyway. So I walked outside all skeptical, started my truck, pulled the cord and the thing kept running. You win. Thanks.
The same here i tried on the 2008 suburban unplugged the car kept running. I bought a new maf sensor installed it unplugged the car kept running. 🤔🤔🤔i wonder do you do this on a cold engine or hot.
@@SamSam-on8dt each car work different most of the cars will keep running other dont...if your car keep running BUT you got all the loss power back and I mean like no issues then provably it is bad / bad groud or broken wire must see wire near connector 🖖🏿
Hey Paul you shouldn't be putting videos like that's up a lot of people will be wasting a lot of of money. I don't know if you're a mechanic. That's not how you test an air flow sensor
Wow..! tried exactly what you said step by step.. it fixed the car, I couldn't believe it at first. so we tried the experiment again, same result-- this repair saved us hundreds!! Thank you for taking the time to post this video!
You saved me from headaches. I thought my transmission was the problem, the dealer told me I needed a new fuel pump, and my brother said I needed a tuneup. After watching your video I tried it out on my car, found out it was the MAF sensor, ordered it and my car works like a new one. Thanks!!
Also unplugging the mass air flow sensor while the car is running on some cars will cause the car to go into a test mode and then u may have to see a mechanic to get out of test mode
Hi my car was stalling at stop lights and I unplugged the mass air flow sensor plug and plugged it back in again and now my car is not stalling anymore 👍🏻🇦🇺 thanks so much for this video.
Fr i did the same i replace all the spark components coils, plugs, fuel injectors, valve cover, and fuel regulator and still threw a cyl 3 misfire. Got the sensor and ran better than it ever did made the light go of. P0303 code gone @Ron.Swanson.
@@JohanAguilar-kk9sp I replaced my MAF the other day after doing googling for 3-4 days on why my 4Runner was not accelerating well when I was pushing on the pedal. It seemed to have fixed the issue.
Awesome man spent 190 dollars at a corner shop and couldn't find the issue on why it idles roughly, I should have started with TH-cam to find my issue myself. I came across your video third video from The View Bar I tried it and that's exactly what it was. From now on I'll be diagnosing my own car using TH-cam
im impressed by how you explain something like this quiet simple without any nonsence and taking ten minutes to do so ,, so well done , i would think you would make a good doctor or teacher of any subject in front of a classroom of kids
Thank you for this for this quick simple video. I ran a code saying my CAT was bad & my mechanic said to change the MAF first. Your video confirmed that the MAF needed cleaning/change. Thanks again
This video stands out as one of the finest instructional resources on TH-cam. It wastes no time and gets right to the point. Initially, I believed my transmission was experiencing problems, so I attempted to resolve the issue by changing spark plugs and the fuel filter, but to no avail. However, upon discovering your video, all of my troubles were alleviated.
I had been troubleshooting my daughters 07 Pontiac G6 for traction control light and check engine codes for weeks. I cleaned the MAF, New Air filter, fuel Injector Cleaner and all kinds of fixes. Went through the Shop Manual, watched hundreds of TH-cam videos, went on G6 Forums, tried dozens of things but no good results. Everyone had a different opinion of what the problem was. All pointed to very expensive repairs. I was in despair so i decided to pray for a solution and within minutes your video came into my view. I went out to the car an pulled the sensor plug and the car kept on running. Ordered a new MAF Sensor online $35 buck plus shipping. Thank you. God Bless. Ill add the codes I was getting to help others P0171 & P0174 and T/C Light.
I am gonna try this, so simple but effective. I did clean my MAF last night. One side was black and the other was amber, now after cleaning it, the black side looks better, but I am not 100%. I think this little test will tell me more . Thx for posting this one !!
Wow, after months of trying to figure out what was wrong with my car - talking to and taking it to many mechanics this is the answer I have been looking for. Thank you soo much man, I can now freely go travelling my home country!
I have Cx5 2014 sport, 6speed, 135,000 miles, I've had spark plugs & tune up, misfire coil wire #2 changed. Ran well, for two weeks ago, I recently noticed some hesitation & jerking again, upon stepping on the gas going up a hill, was only able to go 5 to 10 miles smh. I ordered the MFA oem part, and hopefully, this will fix the issue. The car has been to 2 garages, totaling $500, and I've heard hope its not the engine or something else from them. Thanks for your video❤
Same story here with a 2016 Kia Soul+. One lone misfire on cylinder #2 code, that never came back. So no codes to go on for 6+ months. Changed plugs, coils, battery, filters, cleaned fuel injectors. Took it to 3 repair shops. Spent $$$$$$! Last shop said maybe it's in Limp mode with no code? Or maybe it's the transmission? Called the Kia dealership twice $200 to put it on the first level code reader, $+++ after that! Kia even said maybe it's beyond repair! 😢 At 133,000 miles!? It went from great car to 40 mph tops, then to 20 mph tops over 6 months. Won't climb the smallest incline. Jerks, rough idle, can't press the pedal down even halfway way or it starts knocking under the middle passenger's side. Barely no forward power, and jerky Fuel economy dropped from 30 to about 10 mpg. Runs best upon starting for the 1-2 minutes between "cold" & "neutral". Doesn't go over 2000 rpm. Seems like it doesn't shift out of second gear. But no codes! Just a quickly flashing oil light after it's been running for awhile, but I've checked the oil dozens of times & it's always full. A lot of weird symptoms! I'm gonna try this MAF test & see if it's that!
I agree with the comments, good video, I would like to add one detail if I may. Another option is to purchase a can of MAF Sensor cleaner, and I only say this because some of those sensors can be expensive. I've had excellent results with the cleaner, and no disrespect intended to your video.
WOW I have now gone through 2 and prob 2 hours of research to have you simply unplug it... Your on point. MILLION DOLLAR QUEST. For both of you Scholars, if the engine doesn't Is cut off and still runs which would means my sensor's bad, I could still possibly clean it to salvage it??? I did try to spray a bit of cleaner but still the same problem, any further suggestions aside from the basic spray cleaning? and the mi
Electronically a mass airflow sensor is a very simple component. It consists of a thermometer and an anemometer. The anemometer measures the airspeed and the thermometer measures the air density and given a fixed diameter you can calculate exactly how much air is going through it
You should not do this because the battery acts as a capacitor (voltage spike dampener). The alternator will generate more voltage the faster it spins far in an excess of 12 V. The battery is there to absorb the voltage spikes and distribute an even 12 V to the electronic components that can’t handle more than 12 V. The car actually runs off the battery. the alternator keeps the battery charged. But the car does not run off the alternator.
Don't run without your sensor. That sensor is designed to measure airflow. Yes, your vehicle runs for now, but unregulated airflow will throw off the air fuel ratio, resulting in an offset spark resulting in long-term engine damage. If you haven't replaced it, I highly recommend you do. I'm a mechanic and see this all the time.
@@Michaelbrian777 Yes you 100% correct because I'm facing the exact same issue with my W204 C200. Only when it's hot outside my car's idle goes up and down
If you read the schematic you'll see most MAF sensors contain a temp sensor as well. The correct way to diagnose is to disassemble the connector and remove the MAF signal wire. Reconnect the sensor and drive while watching your fuel trim numbers. With the signal wire disconnected the ECM will substitute values so it can run without the MAF signal. My rig showed LTFT (long term fuel trim) numbers high while driving. Plus 10 to 15 percent added fuel. With the wire disconnected the fuel trims were normal plus or minus 5. Replaced the MAF sensor. The ECM relearned the correct fuel trims during the next cold start warm up. This test is more accurate than just guessing like this video shows.
Just came across this video and happy I did.My 2019 Chev malibu with engine light coming on and car not working good.took it to the dealer,3 and half hours later they said they couldn't find the problem, so they reset everything and if the light comes on again and they would keep it a few days and drive it with a laptop connected and see if they could find a problem.i left the dealers and less them 2 minutes the light came on.I knew I wouldn't be taking back.Found your video and this morning did what you said,car kept running.Took the mass air flow sensor off and cleaned it up with proper cleaner,returned it to the car ,light still on and drove it about 15 km turned car off,started it again.NO LIGHT :-)))) Car works like a charm now. Thank you so much.
Hey thank you very much for posting this video. My check engine light has been on for a few days now and I just did this test and confirmed that the mass air flow sensor is bad. You're right, it was very easy. Thank you again for posting this video and showing us how it's done!!!!
Just cleaned mine it most definitely 100% worked. I took off the negative and positive battery cables before cleaning. Once I reinstalled everything my check engine light went off immediately when I first started the car
I was going to take my 2008 Pontiac to a shop to put the mass air flow sensor on a new one and a emission evaporative position sensor showed a leak that I know where’re it is exactly. But the shop wanted to charge me $700 for labor. So I looked on TH-cam. Thank you cuz you saved me money on the mass air flow sensor. And now I have to look at how to fix the gas air leak. It was so easy to put on a new Mass airflow sensor.
You are the MAN!! , i had rough acceleration, idling was horrible.. I have a 2004 MDX. I turned on the car removed the connection and the car turned off. But as soon I reconnected the connector the idling and acceleration issues were resolved. Its driving much better. I was going to replace all the spark plugs, fuel injectors.. you saved me lots of money. FYI a few months ago thoroughly cleaned the throttle, same results bad idling and acceleration. I guess by unplugging the MASensor while the car is turned ON it reset its reading.. Im very happy now..
"But as soon I reconnected the connector the idling and acceleration issues were resolved. " You mean reconnected with a new maf sensor? I don't think the point of the video was unplug it and them plug it back in ad it'll be fixed?
It's worthwhile to clean the MAF sensor first before replacing it. It did worked in my car. After cleaning it with the MAF sensor cleaner my car is running perfectly. No more hesitation.
Thank you so much Auto shop said transmission was bad. I came home and changed plugs, battery and tried this. It kept running so ordered a new one and air filter.
I tried it just now, my engine keep running when I disconnected it, time to replace mine, but oh man, I clean the throttle, change the spark plug, check the fuel injector and nothing happened until I saw your video, thanks a lot.
YOU ARE THE MAN!!! I have trouble to figure out if it was the MAF or something else... i did it and my car keep running as u said so my MAF is bad... thank you a lot....
Thank you so much for this video! I'm glad I believe in doing my homework before just going to dealerships. Check engine light came on Friday, had the reading done and it came back as the MAF sensor needs replacement. Did this check on Saturday and my car kept running yet acted as if it was going to stop but kept running. I cleaned both my sensors with CRC MAF Sensor Cleaner. Drove it around today and my vehicle rides and idles sooooooooo much smoother now! I sure hope this cleaning resolved it and I don't need to buy new ones. Again, THANK YOU SO MUCH!!!
Rey DeGuerra Exactly I love this, I make videos myself and try to do this, because I hate people who run their damn mouth for 15 minutes for a video that could've been 3 minutes
Watched a guy in another video drive through town with a computer. Total waste of time. Thanks for the easy to understand concise and to the point video.
Hi Just tried this on my old bmw e36, and sure enough, it carried on running!! so job for the weekend is to clean the sensor first before i order a new sensor! thank you so much Paul! Happy from the uk!!
I pulled the plug just like you said and my car took off down the street and never saw it again!!!! Thanks!!! In a instant I saved on total vehicle expense!!!! And i saved 15% on car insurance!!!! No foreal, I will really have to see if that's true.
Simplest explanation. Had to get the obd to find out it was the sensor, but I remember my van not shutting off when I disconnected it. This wouldn't saved me a lot of time and money. Thanks for the helpful tip.
This is very well explained and it is important to know this also sometimes you may not need to replace your MAF Sensor so you can buy a special Mass Air Flow Sensor Cleaner which is a spray and spray the metal wire part of it, you can watch videos on how to clean MAF Sensor.
If the car doesn't turn off your maf sensor is bad or the connector is bad if u have a rough running engine when the sensor is connected cleaning it might fix it but if the engine doesn't stop at all when u dissconnect the sensor then your maf sensor is bad Because maf sensor cleaners clean the sensors and they work only if the sensor was already sending signals or working poorly atleast If you pull the connector and it turns off then the sensor is working "even if it was working poorly it would turn off" It will stay running if the sensor is bad This is my thought about maf sensors if anyone thinks that am wrong pls correct me 😁
The idea of Mass Air Flow Sensor cleaner is not to fix a faulty MAF, it's to KEEP IT CLEAN so it doesn't crap out. Another sign of the MAF being dead is the car running rich, and I mean halve your fuel economy rich, blowing fuel smoke by the bucketload and getting worse as the throttle is opened more. Plugs often foul and cause misses within 50miles or less. Contrary to popular belief due to a "Pimp my mum's car" kids show from England, check engine light doesn't necessarily just mean a faulty O2 sensor! 😂 😂 😂
1.7k Dislikes for such a short helpful vid?? 1.7k mechanics must not have appreciated you sharing the valuable secret.🤑 Thanks for taking the time to help people same money and time!
That's because this video will cause viewers who are inexperienced to misdiagnose the problem. This particular vehicle may or may not represent a small percentage of engines (or it's a very old model without O2 or MAP sensors) as most engines WILL CORRECTLY NOT KILL the engine when the MAF is disconnected (I haven't seen an engine that would die regardless if the MAF was good or not). When disconnected, the ECU will go into a default mode where it will rely on other sensors such as the MAP and upstream O2 sensor (A/F ratio sensor on newer cars) to calculate for a 14.7:1 air/fuel mixture and continue to run. Apparently, "Proclaimliberty2000", is not a mechanic and will cause more problems than help and was wise to add that long disclaimer. He may have good intentions or may be deliberately screwing with people; I don't know but I have nothing to gain by advising that no one trust him when it comes to engine diagnosis. In this day and age, four things are needed to reach a 100% absolutely correct engine diagnosis (although less will do in some cases). Those are: 1.a scan tool that is able to read live data and display freeze frame data, 2.an oscilloscope, 3.the factory car specific service manual or access to your vehicles specifications/values for parts that may be causing an issue and 4.at least a general understanding of the mechanics and the CAN Bus OBD II system that exist in all vehicles today (OBD II codes are the same for all car manufacturers, unlike the older OBD I systems). Hopefully, you'll at least watch a few other videos. You can't trust the first one you watch on You Tube without sometimes regretting it or worse, creating more problems. Good Luck!
This is a short 2 minute video (I have no idea who the channel belongs to nor do I have anything to gain) that advises if you have an issue that causes your vehicle to start, then it stalls; disconnect the MAF. If that corrects the problem and the vehicle continues to run with the MAF disconnected, then the MAF sensor is bad and needs to either be replaced or in some cases, cleaning it properly and with the correct cleaner (MAF cleaner, electronic cleaner, brake cleaner, etc) may correct the issue. The reason is that the bad MAF sensor is sending incorrect data to the ECU but by disconnecting it, the ECU can't use the bad data (either very lean or rich condition/engine needs a 14.7:1 A/F mixture to properly combust) that is causing the engine to die, so it then relies on other sensors. Hope this explains the many dislikes here and helps. th-cam.com/video/M1m-n5rxuQs/w-d-xo.html
Thanks for the video. I had this same problem with my z4 e85 three times already within a week. The mechanic did mention last Jan 2023 that it may go bad and to replace it but mind as well clean the MAF first to see results. After cleaning it, all was good until just few days ago and today, I started to have that same problem and this time it went dead on the road. Had to park on the side to restart the engine again.
Something you might want to mention is that diesels can run without a MAF. So the engine might still run with it disconnected, but the MAF still be bad.
Before you go replacing the MAS you can take it off and clean it with electrical cleaner spray, this usually works and saves money The same with your idle control valve
my st220 started cutting out i changed the coil pack and sorted a loose vacuum pipe which sorted the erratic idle , but now the car idle started diving and wanted to cut out whilst on the run. I just did this test and found the car was still running after removing the maf connection... so im buying a new one ... thanks for your demo sir!!
I need to buy one because engine keeps working when I pull connector. My mechanic found problem in MAF sensor using diagnostic device. So you are right. Thanks a lot for the video.
If you have a K & N filter installed then you should clean it after cleaning your filter. Because the oils from the filter can contaminate the “wire” on the MAF. But this test is golden to diagnose a bad one.
I unplugged my MAF and my engine ran crappy but didn't shut off. Cleaned the MAF sensor and plugged it back in and it ran fine. I have to question about the engine shutting off by just unplugging the MAF. Just clean the MAF and see how the car runs. Check the vacuum hoses etc. that can cause a lean condition. Check some other TH-cams for other things that can cause an engine light associated with the MAF.
I was amazed that my terribly running recently purchased 07 pathfinder stalled slightly but kept running. Does this definitively mean that the sensor is faulty? That would be an amazing quick to a problem that’s been taking too long to figure out. Thanks for the awesome straight to the point video.
Thanks for this video, all cars does NOT stop when you do this! I'm a Mazda Mx5 NC owner. Some just keep running! Thanks anyway, this helps many people👍
Very nice. Simple and straight to the point! No fancy diagnostic tools needed! Sometimes just diagnosing the problem is the hardest part! Wish I would have know this last year but MAF sensor wasn't too expensive for my 2002 Rav4. Only about $32 off Amazon!
Thank you for the information, it worked textbook perfect! I changed mine out on a 98 Honda Accord and it fixed it. Back on the road! Your video was short and to the point, not confusing. Appreciate Ya!
Yes I did , it was running very rough as I was driving down the road. Acted like it was missing and was going to stop at times. That fixed it. But if that doesn’t fix your problem it could be another sensor.there are quite a few of them that could make it do the same thing.
Thank u so mutch. I learn today my car was slightly jerking when driving. Kinda felt like if it was a horse galloping. I did what you told me. I Disconnected the censor and the car kept runing on. Smh. 🤦🏽♂️ thank you !!! God bless you and your family ❤
The MAS will also stop working if it is dirty. On a Yaris take out the two screw and it lifts out. If covered in dirt clean using a sensor cleaning spray. If the contact is already clean you'll require a new one. 1/ Spray the sensor and the two contact point hidden near the top of the sensor lid and allow 5 minutes to dry. 2/ repeat the cleaning process and leave for 25 minutes to thoroughly dry before re-installing it. Do not touch the actual sensor with anything, just spray. Be careful to prevent spraying into the electrical harness contacts.
Just subscribed. Great video, extremely helpful! My only single piece of advice, take it or don't as it won't hurt my feelings (I hope someone can learn from my mistakes), would be to turn the ignition switch to the off position before connecting or disconnecting ANY sensor. I have left vehicles running before while messing with sensors with no issue but on JUST ONE occasion I was messing with a MAF sensor while keeping the vehicle running and it sent a power spike to the PCM, then I had to deal with that... With the ignition set to off before messing with any sensor avoids this from ever happening. Hope this helps. Again, great video.
How did you fix the power strike to the pcm. I'm having the same issue. I unplugged fuses while the car was running then I heard a click click sound. I put the fuse back in and the click sound stopped. But now my car has a check engine light with the obd scanner reading a maf problem. I have changed the maf sensor, ignition coil and spark plugs, but still the check engine light is on and obd reading is saying maf. I think maybe my pcu is tripping and needs to be reset or it takes time for the computer to relearn and reboot.
@@hearditfirst8010 don't negate the possibility of a broken wire or bad connection in the pigtail. people forget that a code regarding a sensor doesn't mean it's necessarily bad, it could also be a communication issue with your control module.
@@sladeherb4056 It was actually my throttle body that was the issue. It got dirty and stuck so it wasn't letting air in, and the maf sensor couldn't read anything, so the CPU assumed the maf sensor was at fault, when it was the throttle body that wasn't letting air in for the sensor to read. You are right in a sense that maf sensor is sometimes the scape goat and not the issue, because the communications are all inter related and inter connected and dependent. Throttle body doesn't have a sensor so the computer blamed it on the next thing that does.
Thank you for sharing this video/info, this is very helpful for people who don’t know much about cars and engines...-like me..I appreciate things like this.
I just did that test and that's the problem or at least one of the problems..bad mass air flow sensor....car just kept running when I unplugged the wire....cool
Not necessarily. Could be dirty .Air box lid could be loose also. Loose or incorrectly installed intake air duct will also trip a code. Short term fuel trim will be around 12 to 13 which is way too high. Good trick but wont really diagnose issue or fix issue on a lot of vehicles.
My mother in law's Ford Taurus would not start and I was able to get it to start by disconnecting the mass air flow sensor. I took the sensor apart and wires and junk stuck on them. Some chipmunks had gotten into the air filter box. I put the sensor back in after I blew the stuff out and it started again when the sensor was reconnected. Good video. Happy Motoring.
@edwingarretson4129 You would think that he would have mentioned that you could try and clean it. A can of MAFS cleaner costs $6. I'm going to try that first before I go get a new one. Now that I'm thinking about it I'll probably go buy one even if it works so I have it
Years ago, a GM tech showed our class a simple trick of using the handle of a screwdriver and very gently tap the mass if the engine changes rpms or stumbles, replace the mass.
I've been an auto mechanic for over 20 years. Many of the problems I see daily could have easily been avoided by simply following the vehicles maintenance schedule. I use a program on my computer called Automotive Wolf car care software to keep track of all the maintenance for my 3 cars, a truck and even a generator. It automatically can send you text message reminders when any type of service is due. Two of my vehicles have over 200,000 miles and have never needed any repairs. Want to save money? Follow your maintenance schedule!
So extremely rare to see on TH-cam someone explain something without the fluff and unnecessary drama to make you watch a 10 min video. Give this man a GOLD TH-cam play button NOW. But the sad fact is TH-cam reward those who game the system, weird isn't it.
My first step is clean the throttle body and plate. I have no doubt this can cause the sticky acceleration. Throttle body spray cleaner is not real pricy
Agree, always like finding simple little videos like this that give me a gist of what to do. Though, in some instances, longer, more drawn out *tutorials* can be appreciated
ABSOLUTELY. Straight to the point.
i can say i learn from this guy he is rare alright.
Unfortunately, it's not true. Like so much youtube. Now, 20 people watch this and make their own videos, creating more bull 💩
I cleaned mine, and it worked for another 5 months, but the problem came back. I performed this test and the engine kept running. Thank you for creating this video! So at this point it is likely to be a bad MAF sensor.
If it keeps getting dirty that quick it can be your air filter dirty as well
did you just clean the screen? there are small wires that also need to be cleaned.
I have been trying to figure out what was wrong with my wife's Malibu for months. Came across this and I will be damned. Changed MAF sensor on 2011 Malibu and now it's purring. No engine codes. God bless you for helping discover the fix and for helping me save money.
What was your wife car doing?
That is how you do it. No stories, no wasting time. To the point! Thank you... Like has been earned.
Thank you a million times for this vid. My 2004 F250 5.4, bought new, was having issues losing power uphill and under load at 85K mileage. Took it to four mechanics over the last 1.5 years. No one could figure it out. One told me the truck's engine wasn't powerful enough and that's just the way it was built. Not! I've driven and towed with this truck since 2004 and never before had this problem. The most recent mechanic at a Ford dealer said it was the transmission and wanted to take me down that rabbit hole but I intuitively knew that wasn't the problem. I had already taken it to a good transmission specialist and he found nothing wrong with the transmission. But, then I found your vid and, sure enough, the sensor was bad! $140 cost to replace and I am now driving with no power loss and ability to tow my horse trailer up hill on the Interstate beautifully. Just as it was built to do!
That’s awesome.
Amazing.
my mechanic told me my cam is broken on my ram and said a used engine would be better, so much bullshit from these highway robbers.
Dang you found the solution, an still got screwed for 140 ! They cost only 22- 50 dollars great tho
@@jwillzcommonsence8870maybe if you get aftermarket BS. I ordered a Duralast and it came all mismanufactured and in horrible condition for $99.....I ordered the FACTORY OEM mass air sensor directly from Mitsubishi for $150 and it came in PERFECT matching condition and my car now runs much much much better, almost like new...... 244,000 miles on it!
Who's the know-it-all true dummshid?
⬇️⬇️⬇️⬇️⬇️⬇️⬇️@@jwillzcommonsence8870
A genuine MAF sensor should almost always be a dealer part or if you can find a genuine, OEM one online somewhere else for a bit cheaper and they always are a bit expensive. As the man said, $140 sounds right. Mine was $118.
I imagine if the rest of us got one of the most vital parts for our vehicle at Kmart, or Temu or where ever it is you shop, we would have got it for 20 bucks also.
You left that comment thinking "these people are idiots" and looks like you're the real genius here, no doubt.
I wonder where that sensor of yours, the new one, wonder where it was made.
Wonder what's the brand? Don't bother. No brand Ebay shid, made in Taiwan, most likely, or dare I say, China.....?
You're a winner today!!!
Reply back to discover what you've won and how to claim your prize!!
I'm gonna be 100% honest and say that I figured pulling the cord on a sensor in general would stop the engine anyway. So I walked outside all skeptical, started my truck, pulled the cord and the thing kept running. You win. Thanks.
I'm going outside.... 🤣lmao
The same here i tried on the 2008 suburban unplugged the car kept running. I bought a new maf sensor installed it unplugged the car kept running. 🤔🤔🤔i wonder do you do this on a cold engine or hot.
@@SamSam-on8dt each car work different most of the cars will keep running other dont...if your car keep running BUT you got all the loss power back and I mean like no issues then provably it is bad / bad groud or broken wire must see wire near connector 🖖🏿
Hey Paul you shouldn't be putting videos like that's up a lot of people will be wasting a lot of of money. I don't know if you're a mechanic. That's not how you test an air flow sensor
Just came back from my garage 😂 my car kept running sooo? New maf sensor I guess
Wow..! tried exactly what you said step by step.. it fixed the car, I couldn't believe it at first. so we tried the experiment again, same result-- this repair saved us hundreds!! Thank you for taking the time to post this video!
You saved me from headaches. I thought my transmission was the problem, the dealer told me I needed a new fuel pump, and my brother said I needed a tuneup. After watching your video I tried it out on my car, found out it was the MAF sensor, ordered it and my car works like a new one. Thanks!!
I I a 2nd 3535erq5q33q444
The dealerships will scam the scrap out of u
Did u install it yourself?
Does this work for all cars
Also unplugging the mass air flow sensor while the car is running on some cars will cause the car to go into a test mode and then u may have to see a mechanic to get out of test mode
Hi my car was stalling at stop lights and I unplugged the mass air flow sensor plug and plugged it back in again and now my car is not stalling anymore 👍🏻🇦🇺 thanks so much for this video.
Short and straight to the point. No fluff. Thanks
After spending 700+ dollars on ignition coils plugs and wires I found this video. I was at wits end. Thank you for being so to the point and concise.
So it solved the problem?
Well at least next time you have a problem, you can rule out all of the things you replaced lol
Fr i did the same i replace all the spark components coils, plugs, fuel injectors, valve cover, and fuel regulator and still threw a cyl 3 misfire. Got the sensor and ran better than it ever did made the light go of. P0303 code gone @Ron.Swanson.
Don't really mind throwing parts at her I'm gonna keep her forever
@@JohanAguilar-kk9sp I replaced my MAF the other day after doing googling for 3-4 days on why my 4Runner was not accelerating well when I was pushing on the pedal. It seemed to have fixed the issue.
Awesome man spent 190 dollars at a corner shop and couldn't find the issue on why it idles roughly, I should have started with TH-cam to find my issue myself. I came across your video third video from The View Bar I tried it and that's exactly what it was. From now on I'll be diagnosing my own car using TH-cam
Also make sure your throttle body is clean. th-cam.com/video/cOAYWVBfuek/w-d-xo.html
Told exactly what I needed to know and took less than 2 minutes to do it. Bravo sir.
im impressed by how you explain something like this quiet simple without any nonsence and taking ten minutes to do so ,, so well done , i would think you would make a good doctor or teacher of any subject in front of a classroom of kids
My mechanic is out of State so i have to Rely on You Tube to fix my car/ thank you for sharing this information Sir i appreciate very much 🙏
Thank you for this for this quick simple video. I ran a code saying my CAT was bad & my mechanic said to change the MAF first. Your video confirmed that the MAF needed cleaning/change. Thanks again
Easy to clean?
This video stands out as one of the finest instructional resources on TH-cam. It wastes no time and gets right to the point. Initially, I believed my transmission was experiencing problems, so I attempted to resolve the issue by changing spark plugs and the fuel filter, but to no avail. However, upon discovering your video, all of my troubles were alleviated.
hi did you have trouble with a shudder noise like miss fire
When you thought your transmission was bad did you also try new brake pads and rotate the tires?
Another secret that Dealership auto mechanics dont want you too know . Thank you !!! 👍👍👍👍👍
I had been troubleshooting my daughters 07 Pontiac G6 for traction control light and check engine codes for weeks. I cleaned the MAF, New Air filter, fuel Injector Cleaner and all kinds of fixes. Went through the Shop Manual, watched hundreds of TH-cam videos, went on G6 Forums, tried dozens of things but no good results. Everyone had a different opinion of what the problem was. All pointed to very expensive repairs. I was in despair so i decided to pray for a solution and within minutes your video came into my view. I went out to the car an pulled the sensor plug and the car kept on running. Ordered a new MAF Sensor online $35 buck plus shipping. Thank you. God Bless. Ill add the codes I was getting to help others P0171 & P0174 and T/C Light.
Thank you so much. Saved me alot of money! My car didn't have a check engine light but watched that video and got my car running great now
I did this because I found your video... I think you saved me $600 because I was told it was my computer!!! Thank you!!!!
Same here
You are gorgeous😍😍😘😘🌷🌷😊😊as simple as that.😅😉😊
Shannon hey bae 👋🏾😉
@@iceburg_jones9887 =
Carlos Hernandez keep your pants on vato
Thanks so much.....I've cleaned everything on a 98 Marquis....only ran for 3 second s......I unplugged massflo sensor...,. STARTED RIGHT UP
I am gonna try this, so simple but effective. I did clean my MAF last night. One side was black and the other was amber, now after cleaning it, the black side looks better, but I am not 100%. I think this little test will tell me more . Thx for posting this one !!
Hello sir! I have samae problem in my car. Can I know did it work after you clean your MASS airflow sensor?
@@etio805 I replaced the MAF, which took 10 minutes, very easy to repair
Wow, after months of trying to figure out what was wrong with my car - talking to and taking it to many mechanics this is the answer I have been looking for. Thank you soo much man, I can now freely go travelling my home country!
What symptoms was the engine giving or just the Check Engine Icon TURNED ON ? TY
All the mechanics had to do was put it on a scanner and read the codes. Some scanners tell exactly what is wrong
I have Cx5 2014 sport, 6speed, 135,000 miles, I've had spark plugs & tune up, misfire coil wire #2 changed. Ran well, for two weeks ago, I recently noticed some hesitation & jerking again, upon stepping on the gas going up a hill, was only able to go 5 to 10 miles smh. I ordered the MFA oem part, and hopefully, this will fix the issue. The car has been to 2 garages, totaling $500, and I've heard hope its not the engine or something else from them. Thanks for your video❤
Same story here with a 2016 Kia Soul+. One lone misfire on cylinder #2 code, that never came back. So no codes to go on for 6+ months. Changed plugs, coils, battery, filters, cleaned fuel injectors. Took it to 3 repair shops. Spent $$$$$$! Last shop said maybe it's in Limp mode with no code? Or maybe it's the transmission? Called the Kia dealership twice $200 to put it on the first level code reader, $+++ after that! Kia even said maybe it's beyond repair! 😢 At 133,000 miles!? It went from great car to 40 mph tops, then to 20 mph tops over 6 months. Won't climb the smallest incline. Jerks, rough idle, can't press the pedal down even halfway way or it starts knocking under the middle passenger's side. Barely no forward power, and jerky Fuel economy dropped from 30 to about 10 mpg. Runs best upon starting for the 1-2 minutes between "cold" & "neutral". Doesn't go over 2000 rpm. Seems like it doesn't shift out of second gear. But no codes! Just a quickly flashing oil light after it's been running for awhile, but I've checked the oil dozens of times & it's always full. A lot of weird symptoms! I'm gonna try this MAF test & see if it's that!
Wow it works now after 4 years of suffering that low voltage. Much appreciated for your sharing Sir! Have a very merry Christmas to you and all!!
I agree with the comments, good video, I would like to add one detail if I may. Another option is to purchase a can of MAF Sensor cleaner, and I only say this because some of those sensors can be expensive. I've had excellent results with the cleaner, and no disrespect intended to your video.
Agreed. Usually a simple cleaning does the trick. Not always, but it's good maintenance to do. At a minimum, it can extend the life of the MAF.
WOW I have now gone through 2 and prob 2 hours of research to have you simply unplug it... Your on point.
MILLION DOLLAR QUEST.
For both of you Scholars, if the engine doesn't Is cut off and still runs which would means my sensor's bad, I could still possibly clean it to salvage it???
I did try to spray a bit of cleaner but still the same problem, any further suggestions aside from the basic spray cleaning?
and the mi
@@nicholasjr.2315
Egg
Electronically a mass airflow sensor is a very simple component. It consists of a thermometer and an anemometer. The anemometer measures the airspeed and the thermometer measures the air density and given a fixed diameter you can calculate exactly how much air is going through it
Just like testing your alternator to test that unplug the battery when the car is running if the car stops your alternator is bad. Great job
You should not do this because the battery acts as a capacitor (voltage spike dampener). The alternator will generate more voltage the faster it spins far in an excess of 12 V. The battery is there to absorb the voltage spikes and distribute an even 12 V to the electronic components that can’t handle more than 12 V. The car actually runs off the battery. the alternator keeps the battery charged. But the car does not run off the alternator.
HOLY BALLS IT WORKS.
MY CAR KEPT RUNNING AND IT RAN BETTER WITHOUT THE SENSOR. YOU ARE THE MAN!
2003 MITSUBISHI OUTLANDER
Don't run without your sensor. That sensor is designed to measure airflow. Yes, your vehicle runs for now, but unregulated airflow will throw off the air fuel ratio, resulting in an offset spark resulting in long-term engine damage. If you haven't replaced it, I highly recommend you do. I'm a mechanic and see this all the time.
@@Michaelbrian777 Yes you 100% correct because I'm facing the exact same issue with my W204 C200. Only when it's hot outside my car's idle goes up and down
@@Michaelbrian777 Did you clean your sensor? If so... Did it work?
@@Michaelbrian777 So it worked? Also your rev was fluctuating at idle right?
@@Michaelbrian777 Did you notice more fuel consumption when the O2 sensor was bad ?
If you read the schematic you'll see most MAF sensors contain a temp sensor as well. The correct way to diagnose is to disassemble the connector and remove the MAF signal wire. Reconnect the sensor and drive while watching your fuel trim numbers. With the signal wire disconnected the ECM will substitute values so it can run without the MAF signal. My rig showed LTFT (long term fuel trim) numbers high while driving. Plus 10 to 15 percent added fuel. With the wire disconnected the fuel trims were normal plus or minus 5. Replaced the MAF sensor. The ECM relearned the correct fuel trims during the next cold start warm up. This test is more accurate than just guessing like this video shows.
You should make a video of that
Is that means when disconnecting the signal wire and the LTFT came back to normal readings means that the maf need to be replaced?!
I tried this guy's suggestion and I bet I will never do that again 😮
@@cynthiadudal9301why?? Lol
Why what happened when u performed this guy's suggestion?
Just came across this video and happy I did.My 2019 Chev malibu with engine light coming on and car not working good.took it to the dealer,3 and half hours later they said they couldn't find the problem, so they reset everything and if the light comes on again and they would keep it a few days and drive it with a laptop connected and see if they could find a problem.i left the dealers and less them 2 minutes the light came on.I knew I wouldn't be taking back.Found your video and this morning did what you said,car kept running.Took the mass air flow sensor off and cleaned it up with proper cleaner,returned it to the car ,light still on and drove it about 15 km turned car off,started it again.NO LIGHT :-)))) Car works like a charm now. Thank you so much.
What cleaner did you use?😅
This man needs a medal, finally a simple to the point video ! I appreciate it my friend
Lol wtf I just told a mechanic that I tested my MAF sensor like this & he said that’s not a good idea
@@steelokey anyone who can make money from you will tell you that. They don't want people to find the easy way around things.
@@gazlp1 lol right, i found out that was my problem, bought an OEM one cause the one the previous owner/mechanic shop had put in a aftermarket part. 🔑
@@steelokey pl
@@steelokey
Pp0lp0
Hey thank you very much for posting this video. My check engine light has been on for a few days now and I just did this test and confirmed that the mass air flow sensor is bad. You're right, it was very easy.
Thank you again for posting this video and showing us how it's done!!!!
Just cleaned mine it most definitely 100% worked. I took off the negative and positive battery cables before cleaning. Once I reinstalled everything my check engine light went off immediately when I first started the car
If you take off your negative battery cable the check engine light will go off but will soon come back on if problem still exists.
@@davidbatin1699 thank you for saying this the autozone lady just ripped me off bro
@@davidbatin1699 100% true. The check engine light will reappear the next time they shut the engine off and back on again.
I was going to take my 2008 Pontiac to a shop to put the mass air flow sensor on a new one and a emission evaporative position sensor showed a leak that I know where’re it is exactly. But the shop wanted to charge me $700 for labor. So I looked on TH-cam. Thank you cuz you saved me money on the mass air flow sensor. And now I have to look at how to fix the gas air leak. It was so easy to put on a new Mass airflow sensor.
Your 2mins video has given me a lifetime of knowledge to share.
Yes shared to two friends 👌
You are the MAN!! , i had rough acceleration, idling was horrible.. I have a 2004 MDX. I turned on the car removed the connection and the car turned off. But as soon I reconnected the connector the idling and acceleration issues were resolved. Its driving much better. I was going to replace all the spark plugs, fuel injectors.. you saved me lots of money.
FYI a few months ago thoroughly cleaned the throttle, same results bad idling and acceleration. I guess by unplugging the MASensor while the car is turned ON it reset its reading.. Im very happy now..
That was around five months ago or so I guess, just curious on how your car is doing now? Am thinking of trying this. Thanks!
That was around five months ago or so I guess, just curious on how your car is doing now? Thanks!
"But as soon I reconnected the connector the idling and acceleration issues were resolved. " You mean reconnected with a new maf sensor? I don't think the point of the video was unplug it and them plug it back in ad it'll be fixed?
It's worthwhile to clean the MAF sensor first before replacing it. It did worked in my car. After cleaning it with the MAF sensor cleaner my car is running perfectly. No more hesitation.
mine did not work after.. :;
That’s a temporary fix, it will soon fail and cleaning it won’t work
Did your car vibrate only inder accelration?
@@irishuwould5185 Just like all parts on the car, yes.
I tried that before. It almost fucked my car up. Made my car shake during acceleration.
This is a great job of getting to the point and creating a detailed and concise solution for the average person. Thank you so much.
Go f yourself. U dont care about me or my family. Listen to urself.
And thank God it was not filmed in Nerd Vertical!
Can either of these cause a surging? MAF sensor
One bad plug wire
clogged catalytic
Converter?
I don't have a Check engine light on.
Thank you so much Auto shop said transmission was bad. I came home and changed plugs, battery and tried this. It kept running so ordered a new one and air filter.
I tried it just now, my engine keep running when I disconnected it, time to replace mine, but oh man, I clean the throttle, change the spark plug, check the fuel injector and nothing happened until I saw your video, thanks a lot.
Love this video sir. I used it to check my cars MAF sensor. Luckily it was still working. Love the simplicity.
YOU ARE THE MAN!!! I have trouble to figure out if it was the MAF or something else... i did it and my car keep running as u said so my MAF is bad... thank you a lot....
did you replace it yet and its working?
@@gingerwallets8000 2 years later lol
@@Piercemxpx hes no better not replying to me and its already been a week pft how rude
If the car keeps running does it always mean the maf is bad?
Mines kept running today thanks also
You are a gentleman and a scholar! I had the good old multimeter out and ready to test it and saw your video, beautifully simple!!
Thank you so much for this video! I'm glad I believe in doing my homework before just going to dealerships. Check engine light came on Friday, had the reading done and it came back as the MAF sensor needs replacement. Did this check on Saturday and my car kept running yet acted as if it was going to stop but kept running.
I cleaned both my sensors with CRC MAF Sensor Cleaner. Drove it around today and my vehicle rides and idles sooooooooo much smoother now! I sure hope this cleaning resolved it and I don't need to buy new ones. Again, THANK YOU SO MUCH!!!
I bought the same exact denso from Amazon for my 2003 Corolla with 150k miles works awesome just installed it yesterday
At last a Video of the simplest form with no bullshit! Keep up the good work!
i know right
Yeah!
Bigstep uk v
Bigstep uk.
Bigstep uk very clear and presice.👍
Thank you to all TH-cam mechanics. You've helped me out so much. This video in particular was very helpful. Keep it up!
Excellent video, quick, and to the point. You didn't do alot of talking. Thank you.
Rey DeGuerra Exactly I love this, I make videos myself and try to do this, because I hate people who run their damn mouth for 15 minutes for a video that could've been 3 minutes
I so agreed u and Chris fix the bomb very awesome no repeating yourself or telling storys
Watched a guy in another video drive through town with a computer. Total waste of time. Thanks for the easy to understand concise and to the point video.
Damn. I just went outside and unplugged everything on the airmass censor and its still running. You might of just saved me. Thanks
Hi Just tried this on my old bmw e36, and sure enough, it carried on running!! so job for the weekend is to clean the sensor first before i order a new sensor! thank you so much Paul! Happy from the uk!!
THANK YOU...for taking the time to explain this. I am having the exact issue with my auto, this will save me a lot of $$$$!!!
Straight to the point. No BS
Nice one mate 👍
👍😊
This is extra helpful when you have two intakes and two sensors. One was bad and this helped me figure out which one it was.
I pulled the plug just like you said and my car took off down the street and never saw it again!!!! Thanks!!! In a instant I saved on total vehicle expense!!!! And i saved 15% on car insurance!!!! No foreal, I will really have to see if that's true.
Simplest explanation. Had to get the obd to find out it was the sensor, but I remember my van not shutting off when I disconnected it. This wouldn't saved me a lot of time and money. Thanks for the helpful tip.
This is very well explained and it is important to know this also sometimes you may not need to replace your MAF Sensor so you can buy a special Mass Air Flow Sensor Cleaner which is a spray and spray the metal wire part of it, you can watch videos on how to clean MAF Sensor.
If the car doesn't turn off your maf sensor is bad or the connector is bad
if u have a rough running engine when the sensor is connected cleaning it might fix it but if the engine doesn't stop at all when u dissconnect the sensor then your maf sensor is bad
Because maf sensor cleaners clean the sensors and they work only if the sensor was already sending signals or working poorly atleast
If you pull the connector and it turns off then the sensor is working "even if it was working poorly it would turn off"
It will stay running if the sensor is bad
This is my thought about maf sensors if anyone thinks that am wrong pls correct me 😁
The idea of Mass Air Flow Sensor cleaner is not to fix a faulty MAF, it's to KEEP IT CLEAN so it doesn't crap out.
Another sign of the MAF being dead is the car running rich, and I mean halve your fuel economy rich, blowing fuel smoke by the bucketload and getting worse as the throttle is opened more. Plugs often foul and cause misses within 50miles or less.
Contrary to popular belief due to a "Pimp my mum's car" kids show from England, check engine light doesn't necessarily just mean a faulty O2 sensor! 😂 😂 😂
1.7k Dislikes for such a short helpful vid?? 1.7k mechanics must not have appreciated you sharing the valuable secret.🤑
Thanks for taking the time to help people same money and time!
That's because this video will cause viewers who are inexperienced to misdiagnose the problem. This particular vehicle may or may not represent a small percentage of engines (or it's a very old model without O2 or MAP sensors) as most engines WILL CORRECTLY NOT KILL the engine when the MAF is disconnected (I haven't seen an engine that would die regardless if the MAF was good or not). When disconnected, the ECU will go into a default mode where it will rely on other sensors such as the MAP and upstream O2 sensor (A/F ratio sensor on newer cars) to calculate for a 14.7:1 air/fuel mixture and continue to run. Apparently, "Proclaimliberty2000", is not a mechanic and will cause more problems than help and was wise to add that long disclaimer. He may have good intentions or may be deliberately screwing with people; I don't know but I have nothing to gain by advising that no one trust him when it comes to engine diagnosis. In this day and age, four things are needed to reach a 100% absolutely correct engine diagnosis (although less will do in some cases). Those are: 1.a scan tool that is able to read live data and display freeze frame data, 2.an oscilloscope, 3.the factory car specific service manual or access to your vehicles specifications/values for parts that may be causing an issue and 4.at least a general understanding of the mechanics and the CAN Bus OBD II system that exist in all vehicles today (OBD II codes are the same for all car manufacturers, unlike the older OBD I systems). Hopefully, you'll at least watch a few other videos. You can't trust the first one you watch on You Tube without sometimes regretting it or worse, creating more problems. Good Luck!
This is a short 2 minute video (I have no idea who the channel belongs to nor do I have anything to gain) that advises if you have an issue that causes your vehicle to start, then it stalls; disconnect the MAF. If that corrects the problem and the vehicle continues to run with the MAF disconnected, then the MAF sensor is bad and needs to either be replaced or in some cases, cleaning it properly and with the correct cleaner (MAF cleaner, electronic cleaner, brake cleaner, etc) may correct the issue. The reason is that the bad MAF sensor is sending incorrect data to the ECU but by disconnecting it, the ECU can't use the bad data (either very lean or rich condition/engine needs a 14.7:1 A/F mixture to properly combust) that is causing the engine to die, so it then relies on other sensors. Hope this explains the many dislikes here and helps. th-cam.com/video/M1m-n5rxuQs/w-d-xo.html
Thanks for the video. I had this same problem with my z4 e85 three times already within a week. The mechanic did mention last Jan 2023 that it may go bad and to replace it but mind as well clean the MAF first to see results.
After cleaning it, all was good until just few days ago and today, I started to have that same problem and this time it went dead on the road. Had to park on the side to restart the engine again.
🤦♂️ where was this video when I needed. I had this issue last week didn't know how to test it. Now I know. Thank You.
HI from NZ. Thank you for sharing this short but very helpful video. I'm going to test my daughter's car for this problem. Thanks so much!
Something you might want to mention is that diesels can run without a MAF. So the engine might still run with it disconnected, but the MAF still be bad.
This is the case on my diesel
totally correct, you deserve a medal. But in the US basically no one owns a diesel car after VW dieselgate
Before you go replacing the MAS you can take it off and clean it with electrical cleaner spray, this usually works and saves money
The same with your idle control valve
my st220 started cutting out i changed the coil pack and sorted a loose vacuum pipe which sorted the erratic idle , but now the car idle started diving and wanted to cut out whilst on the run. I just did this test and found the car was still running after removing the maf connection... so im buying a new one ... thanks for your demo sir!!
I need to buy one because engine keeps working when I pull connector. My mechanic found problem in MAF sensor using diagnostic device. So you are right. Thanks a lot for the video.
Ck'd it with my OBD II it said flow restriction. I thought it was the cad converter but saw this video wow! fastest diagnosis ever. Thank you!
Mine is saying p0403 EGR vaccums solonoid . But when I pull this plug it doesn’t shut off
This video saved me! My car didn't do exactly what he said but it gave me my diagnosis
If you have a K & N filter installed then you should clean it after cleaning your filter. Because the oils from the filter can contaminate the “wire” on the MAF. But this test is golden to diagnose a bad one.
What filter ?
@@youonlyliveonce2556
Air filter!
I unplugged my MAF and my engine ran crappy but didn't shut off. Cleaned the MAF sensor and plugged it back in and it ran fine. I have to question about the engine shutting off by just unplugging the MAF. Just clean the MAF and see how the car runs. Check the vacuum hoses etc. that can cause a lean condition. Check some other TH-cams for other things that can cause an engine light associated with the MAF.
A five year old understands this video. Great content without trying to sound like an engine guru. I will subscribe just for that.
Awesome!
Short and to the point! No acting or wanting to make a movie!
I was amazed that my terribly running recently purchased 07 pathfinder stalled slightly but kept running. Does this definitively mean that the sensor is faulty? That would be an amazing quick to a problem that’s been taking too long to figure out. Thanks for the awesome straight to the point video.
thank you, I love youtube, I keep learning so much about cars and mechanics.MAY THE LORD BLESS YOU.
Héctor Serrano seriously though.
lol the lord do not like polution....
Thanks for this video, all cars does NOT stop when you do this! I'm a Mazda Mx5 NC owner. Some just keep running! Thanks anyway, this helps many people👍
Very nice. Simple and straight to the point! No fancy diagnostic tools needed! Sometimes just diagnosing the problem is the hardest part! Wish I would have know this last year but MAF sensor wasn't too expensive for my 2002 Rav4. Only about $32 off Amazon!
Thank you for the information, it worked textbook perfect! I changed mine out on a 98 Honda Accord and it fixed it. Back on the road! Your video was short and to the point, not confusing. Appreciate Ya!
did u experience any car symptoms before u changed the maf sensor...
Yes I did , it was running very rough as I was driving down the road. Acted like it was missing and was going to stop at times. That fixed it. But if that doesn’t fix your problem it could be another sensor.there are quite a few of them that could make it do the same thing.
@@Jimbo7303 98 it works, but after 2000 no more so this test is for older cars, use live data and you know for sure what the problem will be.
Simple and straightforward. Thank you. My Volvo S40 needs a new Mass Airflow sensor
Hello I have a volvo S40 too. What symptoms were you getting and did you fix the problem?
Great test and everybody loves it..question did the engine light go out after you plugged it back in ? We need a Coronovirus test like this.
I did this test after having issues with stalling at junctions, didn't have an engine light on before, but I do after doing this.
Thank u so mutch. I learn today my car was slightly jerking when driving. Kinda felt like if it was a horse galloping. I did what you told me. I Disconnected the censor and the car kept runing on. Smh. 🤦🏽♂️ thank you !!! God bless you and your family ❤
The MAS will also stop working if it is dirty. On a Yaris take out the two screw and it lifts out. If covered in dirt clean using a sensor cleaning spray. If the contact is already clean you'll require a new one.
1/ Spray the sensor and the two contact point hidden near the top of the sensor lid and allow 5 minutes to dry. 2/ repeat the cleaning process and leave for 25 minutes to thoroughly dry before re-installing it. Do not touch the actual sensor with anything, just spray. Be careful to prevent spraying into the electrical harness contacts.
Just subscribed. Great video, extremely helpful! My only single piece of advice, take it or don't as it won't hurt my feelings (I hope someone can learn from my mistakes), would be to turn the ignition switch to the off position before connecting or disconnecting ANY sensor. I have left vehicles running before while messing with sensors with no issue but on JUST ONE occasion I was messing with a MAF sensor while keeping the vehicle running and it sent a power spike to the PCM, then I had to deal with that... With the ignition set to off before messing with any sensor avoids this from ever happening. Hope this helps. Again, great video.
How do we test MAF as suggested by this video, if we have to turn off the ignition?
How did you fix the power strike to the pcm. I'm having the same issue. I unplugged fuses while the car was running then I heard a click click sound. I put the fuse back in and the click sound stopped. But now my car has a check engine light with the obd scanner reading a maf problem. I have changed the maf sensor, ignition coil and spark plugs, but still the check engine light is on and obd reading is saying maf. I think maybe my pcu is tripping and needs to be reset or it takes time for the computer to relearn and reboot.
@@hearditfirst8010 don't negate the possibility of a broken wire or bad connection in the pigtail. people forget that a code regarding a sensor doesn't mean it's necessarily bad, it could also be a communication issue with your control module.
@@sladeherb4056 It was actually my throttle body that was the issue. It got dirty and stuck so it wasn't letting air in, and the maf sensor couldn't read anything, so the CPU assumed the maf sensor was at fault, when it was the throttle body that wasn't letting air in for the sensor to read. You are right in a sense that maf sensor is sometimes the scape goat and not the issue, because the communications are all inter related and inter connected and dependent. Throttle body doesn't have a sensor so the computer blamed it on the next thing that does.
Great instructional video, simple and straight to the point.
This is the best money saving video ever THANKS SO MUCH
OMG! Thank you. Just did as instructed and my engine kept running. Bingo! Thank's again.
Praise God brother. May your video continue to be a gem of knowledge to the masses, Lord willing.
Thank you for sharing this video/info, this is very helpful for people who don’t know much about cars and engines...-like me..I appreciate things like this.
I just did that test and that's the problem or at least one of the problems..bad mass air flow sensor....car just kept running when I unplugged the wire....cool
Not true on all cars. Some computers have a MAF default so if you unplug it your engine runs on the computer default settings.
Thank you, this is the easiest diagnostic i have ever seen among other videos, would give it a trial and find out !
Not necessarily. Could be dirty .Air box lid could be loose also. Loose or incorrectly installed intake air duct will also trip a code. Short term fuel trim will be around 12 to 13 which is way too high. Good trick but wont really diagnose issue or fix issue on a lot of vehicles.
My mother in law's Ford Taurus would not start and I was able to get it to start by disconnecting the mass air flow sensor.
I took the sensor apart and wires and junk stuck on them. Some chipmunks had gotten into the air filter box.
I put the sensor back in after I blew the stuff out and it started again when the sensor was reconnected.
Good video. Happy Motoring.
Fantastic video!! Simple, easy way of determining if it's bad. Issues could simply mean it needs to be cleaned.
👍👍👍👍👍👍👍👍👍👍👍👀👌
@@stevegarcia1796 that's in most cases it needs to be clean not necessarily replaced
@edwingarretson4129 You would think that he would have mentioned that you could try and clean it. A can of MAFS cleaner costs $6. I'm going to try that first before I go get a new one. Now that I'm thinking about it I'll probably go buy one even if it works so I have it
In some cars the engine will not die because the ECM has a predefined fuel trim for when the air calculation fails. It will just run really rough!
You are absolutely right, my range rover 2003 still runs after i unplugged the map sensor.
thank you this was spot and the crazy problem that fixed my moms car! thanks for making such a simple but amazing video
Gr8 advice and after cranking and disconnecting the maf sensor the car did stop so thanks for the advice🙌💯👍
Years ago, a GM tech showed our class a simple trick of using the handle of a screwdriver and very gently tap the mass if the engine changes rpms or stumbles, replace the mass.
Great information,thank you so much.I unplugged this sensor and was worried about if vehicle would reset itself,so it's 20 mile's.Thank's again.
Benito Juarez v
Benito Juarez iiii
I've been an auto mechanic for over 20 years. Many of the problems I see daily could have easily been avoided by simply following the vehicles maintenance schedule. I use a program on my computer called Automotive Wolf car care software to keep track of all the maintenance for my 3 cars, a truck and even a generator. It automatically can send you text message reminders when any type of service is due. Two of my vehicles have over 200,000 miles and have never needed any repairs. Want to save money? Follow your maintenance schedule!
And how is a sensor going bad going to be prevented by normal maintenance?
Hey dude thank alot for make my this. You're cooler than Eskimo fingertips.
this comment rocks
Yeah yeah you're like like super cool dude get it like super cool
FANTASTIC TIP....What other ENGINE SYMPTOMS, besides the CHECK ENGINE ICON TURNED ON, could be signs of a BAD MAF SENSOR ??? TY !
Hmm this does make sense surprisingly. Im not sure if it applies to all ECUs though
I agree.