Mass Airflow Symptoms and the Workings Of The Mass Airflow Sensor
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- เผยแพร่เมื่อ 14 ต.ค. 2024
- Always we neglect our Mass Airflow sensor so we go over the mass airflow symptoms you may have and how to correct the mass airflow sensor with quick follow through. Learn more at www.fastuun.com/starters-edition
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"Wisdom my lad is never cheap!" (Terry Pratchett) - And were just blessed to have found a FLOW of information! 👍
I've suspected a MAF problem on my new car (first time with a turbo and aftermarket intake), and this told me everything I needed to know. Thank you!
I have been struggling with a intermittent vibration at speed in a 2003 Camry V6 primarily going up hills. Symptoms were the car body and steering wheel vibrated. It felt like a out of balance tire (I just had the tires rotated) so I took it back into the tire shop and had the tires checked. I chased my tail trying to correlate the driving issues. Yesterday, the weather changed from sunny and warm (thin air) to cool overcast with light rain (thick air) and the vibration subsided! It had something to do with air density. I came across this video and you articulated how/why the MAF functions within the system. I was convinced this was the problem. I removed the sensor and cleaned , now Car runs perfect.
You very seldom get to see subject matter experts on TH-cam. Thanks for sharing your knowledge.
LITERALLY THE BEST MASS AIRFLOW SENSOR VIDEO IVE SEEN BY FAR!!!!!! Thank you!
Thank you for taking the time to make this video. My truck was running rough and rich. Cleaned the Maf sensor and it's like a new truck.
Liked the way he explained this. Even us girls could understand this. Great job.
Have spent a lot of money on other senors and repair shop visits for my problem in a 2000 Miata. And after seeing this I purchased a mass airflow sensor and WOW, problem solved. Doesn't say a whole lot about the competence of mechanics in my area. This guy covered a lot in this video, but was all related to the sensor. Thank you for the video. It was well done. If ever in Midland Texas let me buy you a steak dinner and beer or two........................... Or three.. lol
I know he knows what he’s talking about because I didn’t understand anything he said in this video
Funniest comment lol
Nathan Dominguez unplug the maf sensor and turn your car on if it doesn’t turn on it no work if it does turn on its ur beryllium agitator acting up causing non linear dioxide flow over the silicone filament of the pulse disruptor
@@infamousnfx8703 :-)
@@infamousnfx8703 turboencabulator?
CYPHER MOTE Oh jeez rick you know I really messed that one up man!
I been trying to get my truck to pass smog since 2017 and I been trying to figure out this lean code I been having for years ! A/F to lean bank one sensor 1 so I have changed both 02 sensors, didnt work , installed new cat converters still don’t work , changed MAF sensor still nothing ! But I do have a k&N intake and the MAF sensor is mounted underneath instead of facing up “. You just gave me so such valuable information That I been trying to find for years “ so last week I did clean another filter and sprayed some of that oil on and yesterday it’s giving me all kinds of idol problems “ codes popping up like crazy “ cylinders misfired ‘ just making my truck sound like crap “ so when you said it that the MAF can get coated because of the oil 💡. I hope it’s because of that I’m about to find out right now thank you so much
You just save me hundreds of dollars in repairs on my Jaguar with your explanation of how the MAF sensor works. I thought I had a vacuum leak that required a lot of labor to repair. I had installed a K&N filter on my S-Type and it started leaning out under heavy air flow. As long as the engine was cold and the choke was operating, no problem. But once the engine was warm, it would not rev over 3,000 rpm without the automatic ignition cutout coming on. The car drives fine as long as I kept it under 3,000rpm, which is about 73mph. Is that any way to drive a Jaguar? Hell, no!.
So I replaced the K&N oiled element with a dry element ($16) and installed a new MAF sensor ($14.74) and the check engine light is out and everything is fine.
Wow! Your video has made me understand a lot better on how this all works. Very educational and have to say the best detailed and informative video on TH-cam. Thanks for sharing your knowledge 👍🏻
Outstanding! Wish I (and the two mechanics who missed it) had seen this when my van was overheating. I thought it was running too lean and hot. They checked and replaced everything else - thermostat, pump, radiator, even the radiator cap without success. I suspect I probably over-oiled my air filter and or the MAF was just dirty.
Thanks for your help. I appreciate your expertise and you taking the time to share it.
Wow. I feel I should get a diploma or certificate in Mass Airflow! Great discussion on the topic!
That 'was' pretty in-depth & informative... I agree.....
Wanna really blow your mind?, and learn some deep shit about engines and how they work?, and 'why they don't' when they're having problems ?
Dude..?, .. go check out this Guy!! ... *He gives ya the REAL low down*!
To me, it was **!so interesting!**, I watched 'em TWICE !!
It's allot to take in, but Man, lemme tell ya ... It's fascinating! to learn how it all really works!!
AWESOME I tell ya !!!!!!
Enjoy ! ....... and .. learn. I absolutely did ! ! !
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Great presentation. I never post anything online, but I felt it pertinent to mention how well that information was delivered and presented. Thanks for that. Good stuff, Cheers.
I actually understood what you said. Great presentation, it was very informative.
Nice walk through. If I were ignorant enough to not understand terminology... I'd look it up. You did an excellent job A-Z.
Why do people just take 12000 plus views and only 53 bother to like . Good solid and comprehensive info thanks
Tubecraft1
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Jerry Geisert j
clima komberasor deyisdirme
When I watch a knowledge filled video like this I always give a thumbs up , The creator put time and good effort in this vid !!
This is a great explaination for a layman to understand what and how the MAF sensor works and what symptoms occur and where the problem might be...thanks
I have a 2012 wrx but im getting a exclusive fuel trim code running very rich .cleaned the maf and works great for a few days then it does it again . And no boost leaks. Started happening this summer the only thing different is that I've been keeping it in a air condition garage.
Very good explanation...I would just suggest that you explain the jargon terms like "rich" and "lean".
Thanks. Have rough idle on cold start and I have to believe it is a vacuum leak by how you described the symptoms. Makes sense now.
I wasn't expecting to get schooled by shawn, this guy is great! He protunes my car.
Love the video.... Just trying to get an idle of why my ford ranger is running rough...and I like the way you expanded things... Should have a show...
Your explanation on the function and the importance of the MAF being clean was outstanding, thank you...
Thank you for a clean and clear video about the MAF system.
Information presented on a nice rhythm and concise.
I love this. I need this information. You know your story and you know about engines but please slow down. I will watch it again until I'm happy. Thank you for the explanation. It all and everything I was looking for. Thanx man and keep the info coming.
Go check out this Guy !! and you'll understand a WHHOOLLLE lot more ! .. I certainly did !!
Absorb & Enjoy !! Lol
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Shaun Church sir reading the comments I in gather you excellent at this and your explanation many find veru helpful. I am no mac, a guy did some diagnostics on my 'VW POLO 1.6 , but I still have a problem. My car has engine surges.....irregular idling ....fast and slow idle. And now this last few days there is a tendency to cut off.I down the pedal to keep from switching off.seems to this happens if i am stopped ar an incline. Am i sitting with multiple problems...? Have you covered this in any of your other programmes that you can direct me to..?much appreciated. THANKS JOHNNY
Great stuff! I almost feel like watching it again at half speed to catch all that information, lol
So yesterday my 1998 740il popped a p0301 and a p0300 right before my wife and I were about to go out of town and it was shaking bad and barely would accelerate. We ended up taking our van instead. I went and bought a coil for cylinder number #1, installed it and the car did the same thing. I took out all the coils from that bank and the spark plugs as well. They all looked good. I re-installed the plugs and coils leaving the new one out, disconnected the battery and touched the + and - togther, reconnected the battery and the car ran like normal with the slight miss it's had for the past 2 months. I pulled the MAF connector off and the car cleared up perfectly. I put it back on and the miss and slight shake came back. I was about to unplug it again and the car shut off when I touched the wires to the plug connector. Apparently the wires are frayed or something inside or at the plug. They're connected good enough that the car won't throw a CEL for it when it's connected but the mpg's are bad with it connected. I drove a round with it unplugged for about 4 miles and my mpg's are at factory spec, sometimes better like up to 20 mph in the city. When I shut my car off the CEL was back on with the codes P0100 P0130 and P0136. I understand the P0100 but any suggestions would be great. Thanks
No idea what you said bro, the comments were the biggest help!!!!
I was wondering why my 1990 Olds 98 3800 is getting poor (20.1 mpg) gas mileage and I noticed the 1 wire was black with soot or carbon. I hope this helps. Thanks for the video.
Very good useful information. Very interesting is the explanation and diagnose of various problems. Many thanks
very good information. you have described half the problems I have experienced before. Thanks Fastuun
Dude! You are a legend. Thank you for this spectacularrrrrrr explanation.
Thanks You solved a car problem I had 20 years ago Great video !
Well said & spoken. I understood the layout of symptoms better the way he explained it.
Makes a lot of sense now..had my k&n filter on there along time. Thanks
Physics and mathematics in context... Hot...! Thank you, I now realise I have misdiagnosed maf symptoms due to misunderstanding causes... make alot more sense now!
thanks and i agree, you should have your own show. telling me how the MAF acts, or not, tied into another issue i have.
Dude .. Go check out this Guy !! and you'll understand a WHHOOLLLE lot more ! .. I certainly did !!
Absorb.. & Enjoy !! Lol
nice!
lot of focused info in 10 min video.
Really gets a guy thinking .
Thanks for the knowledge!
I have a 16 wrx with a Cobb intake and I’m having negative AF learning 1 badly at like -20 to -30 and this only happens at idle and low throttle; it’s only a problem that has recently happened but the intake has been in for over a year. Where should I start to look first? Cleaning the maf or checking for a leak? And does this sound like a vacuum leak or a boost leak? I might have missed it in the video but I didn’t quite find what my problem is in the video
This guy knows exactly what hes talking about!
I have a 08 chevy silverado lmm 6.6 duramax. I have purchased everything HSP, except the egr delete cold side up pipe. Anyway with the cold air intake as far as temperatures into the motor if it's 28 degrees outside that's what shows on my cts2 at the sensor. My problem is I keep getting a po101 code putting my pickup in limp mode. Using cts2 to clear the code. I've undone the negative on both batteries, purchased a new sensor, even cleaned it. The code still keeps coming up, but not near as frequent! Any suggestions as in a hard reboot? I don't know what to do, I know a dealership going to get my $$$ for probably something very simple.
BRING BACK the Carburetors! Good explanation.
I have a question I just installed a intake on my 2010 civic it ran perfect with the stock air box but not it’s throwing a code for throttle spring malfunction I can’t seem to find the issue it runs for 5-10 sec then shuts off also my check engine light is on
I have a 2012 Nissan Altima and having 3 problems with it that's causing engine light to stay on. Vent control open ,mass air flow range performance and canister purge valve. Are all of these connected with each other like is 1 causing everything else to fail. Is it just the mass air flow sensor that is dirty. Does this have to do with higher RPMS at idle
Bravo! I didn't understand it all but thank you sir! Pretty sure my turbo Subie has a bad MAF. Will be replacing it on Monday :)
What if you try to take out map sensor and take the one bolt on a 2016 Hyundai elantra so take the bolt and wiring harness off and it does not want to come out!? It moves left and right but it does not want to come out!? Thanks! Want to clean it but nervous to really pull it out hard dont want to break..thanks again
I have a question? Would a dirty Mass Air Flow Sensor if dirty. Could it be a cause of a vehicle overheating in idol?
The video is an excellint explanation of the entire job.The video was a great learning privalidge. head of any one who turns there own wrenches
Dude .. Go check out this Guy !! and you'll understand a WHHOOLLLE lot more ! .. I certainly did !!
Absorb.. & Enjoy !! Lol
Thanks, nice descriptive explanation of a mass airflow
Sensor, you know your stuff. Thanks!
Could the MAFS have trouble if you have a bad air filter?
Yes
really informative video, thanks! could a MAF sensor problem be related to cold weather starting issue? car runs fine in mild and hot conditions!
Great video. Very informative
Last tip was a good lookout very close to home condition with my 325ci convertible 02. Gonna test and try cleaning maf and replacing my filter checking my O ring on my Disa and replacing my boots . Just got this car with only 77k miles but it sat obviously forever the engine is filthy below the covers . Was gonna go get familiar with the spark plugs after this anymore key tips ?
Does a dirty MAF sensor cause lack of power when accelerating? Having some issues with my 2013 Cadillac ats 3.6. Took it to Firestone and they said one of my cylinders was misfiring but didn't know which one bc they didn't have the proper tools to pinpoint the issue?
This video is amazing! Good job in explaining everything!
I got a 2012 ford focus and every now and then there is acceleration hesitation where I lose power for a few seconds when the go pedal is pressed when taking off but there is no check engine light on at all. I'm thinkin it may be the spark plugs/ignition coils or mass air flow sensor is dirty. the LW focus 1.6 liter 4 cyl only has 75,000 kilometers on it.
if your getting por gas millage.two simple things to check is 1check for corect tire presure.2 check for dirty air cleaner.change if dirty
thanks a lot , very good explanation theoretical, needs more practical on what you said the parts.. more zooming cam on the parts inside the engine thanks on all of it at the last I have to ask ::: ? what about the mass air flow controller if the conductive graphite has been removed or crushed or seems to be not conduct easy ?? is pencil graphite do any things better ? what to do please ?? azaad
Don't EVER touch that .. that .. thing inside the MAF sensor.. It's sensitive As Hell !!! Only spray MAF Cleaner on, and around it !! NEVER Touch It ..! and No Foreign Materials! on it either ! !
Thank you. Gr8 video.
Ijust put a brand new maf sensor on my 02 325i BMW, and even if I unplug the maf sensor the car would stay idling as normal. In yr opinion what can cause this problem. Thank you.
I have a 2010 Hyundai Elantra with a rough idle. I have a Launch 123 i scan tool. The car idles really smooth with lots of power when it was when new , if I detach the MAF sensor. What should I be looking at? Gas mileage is poor and not as good power wise as when it was new. Drives ok. Could I have a hot wire issue. I have the shop manual form Hyundai . The scan tool will read live data, and I can save the data or freeze frame the data and print it. I notice the timing is erratic, and the idle speed drops down and then comes up! into the range it should be. Engine timing is nit smooth. I had the timing belt and water pump changed because of the age. It had no influence on the rough idle. What do you suggest ? Thanks EJR
Best info I’ve seen on the subject 👍🏾
You'd make a great professor. I know nothing about cars and ten minutes later, I'm part pro.
Good video and information; I really liked words toward the end of the video as how to test it.
In your Subaru example would that cause a bucking or hesitation when boost comes on at partial throttle? Specially 2018 WRX.
My bmw 428i n20 when I stop the car like loses rpm and has even turn off on me like twice will this have to with that sensor? Cleaning it or maybe buying a new one? I have a after market injec intake
helped me figure out whats wrong with this Audi A5 i got sitting out front, idle is weird and vibrates alot cleaning the sensor fixed it had dirt & oil on it!
Damn!!! U R smart as a Whip..very knowledgeable...Thank You!!!!
My car is still hesitating when accelerating at slow speeds after changing maf sensor n spark plugs. Pl advise. Tqvm
Hello sir. I've been experiencing the issue that MAF fails... I have aliexpress BOV. The stock one melted somehow and I needed to change it for sometime.. It's the second time that maf failed. First one was because the inlet pipes were leaking when I bought the car and after I change that it was OK. now I bought Splitter valve from Forge and I'm wondering will that fail again if I use it as a BOV? Do I have to use it as a recirculation valve? my car is 2004 audi tt mk1 225hp stage 1 mapped, downpipe, muffler delete, r8 coils, iridium spark plugs, KN Air filter, k04 Hybrid turbo... What are your suggestions? How can I deal with this MAF failure.. and also do you Suggest Race type of N75 valve to this car with those mods? Thank you.
Really good video lot of technical info, by understanding how a particular system works, it makes it easier to do a proper troubleshooting. Thank you so much. We need to support channels like this because that is what we need when we are trying to fix our cars.
I have these codes on my 04 330i p0171,p0174 that would not clear after I reset the cel..i could not figure out why..i took off my maf and cleaned it and put it back on and the codes cleared..few days later they came back so I did the same thing and now they are back again...u think i should probably replace the maf?
Best MAF sensor video I watched
wow- that was impressive. You just gave me everything I needed to know
Daniel Martin agreed lol, he mentioned everything wrong with my maf lol xD
I agree. Some people try to impress by speed talk and just end up rusting their communication ability. And, yes, HE appears to know what he’s talking about.
Great video, thank you. Very informative.
Will a dirty Mass Air Flow Sensor make the car stall? Also, on my car when I unplugged the MAF, my car shut off. My brother's car is stalling when driving, when I unplugged his MAF, his car still ran. Any ideas? Thanks
Change the sensor
I just purchase a Auto Zone MAF sesnsor for my 2004 350z. However after installing this, after 20 minutes driving throttle response went away, like cruising pace kind of speed. Another words, I push the gas pedal all the way to the floor....yes the car would go, pick up speed. But, nothing dramatic overall....not impressed! I did the complete throttle body relearn, press pedal 5x after 10 seconds hold it down to 20 second count. Still did not work! So put my original one back to the car...press the pedal rpm went smoother, as far as rmp tach, but same result...really bad gas pedal accelerator response. Btw...No Engine light also!! Can you help??
I get a P0101 code on a GM Truck w/6.0L. I have a cold air intake with a second intake hose ducted into the filter box, from an opening in my lower grill. Is it possible that the cold air being scooped in the second hose, is cooling these MAF wires too much? When I mash the gas pedal, the check engine light always comes on. I have a AEROFORCE Scan Gauge plugged into the OBD jack, so right away, I can clear to code and the check engine light goes off. My cold air intake uses a dry filter and not an oiled one. Is this affecting my fuel consumption by simply clearing the codes each time after I mash the gas? If I drive normally, it never comes on... but if I need to go fast, the check engine light almost always comes on. Please help me. Thanks. Dean
Is there any engine temperature issue with the MAF? When my car hits 90F degrees it starts to fluctuate idle... Any help is appreciated!! Mahalo nui loa!
do you recognize a problem when i plug in maf car stalls 96 deville.unplug runs. have been getting 1074 1071 lean codes for a while .checked leaks smoke machine.nothing changed intake gasket.and have done a few other emmission pluses.plugswires.e.coils.have a maf coming today hope its the prob.
I bought the spray and cleaned it . My 2002 Camry v6 ran like new for 2 weeks . Runs terrible again . Sprayed it again and still runs bad ?
zildjianZcustom buy a new MAF
turned out to be the upstream oxygen sensor, thanks for the the input 😪😴😪😴😪😴
does the MAF sensor cause the car to have issues cranking? im buying this car and the guy said that was the only issue and said it was just hard to crank but it does.
Could maf issue cause surging and bucking while driving and check engine light to come on then go away when car is turned off then start again and it happens again in 10 15 miles and not necessarily every time 😮other than this random issue car runs fantastic and great gas mileage
2006 Nissan 350Z . I have some issues with the rpms as well , but my rpm are high around 1200 rpm and is constant the don't move from there , gets annoying because is very loud inside the car. also some times when I rapidly accelerate the car to high speed the car in 5 gear lose power or don't accelerate , so I have to go 1 shift down and goes back to normal , but I keep doing it, so I have to wait until the engine cools off and everything goes to normal. I did change the crankshaft sensor the one under the car driver side , but did not fix the issue, do you have any idea ?? also I did clean the throttle body yesterday to see if that help some, but now is worst, the RPM now is at 2000 and jumping up and down . my car is all stock with manual trans. an of course check engine is on with some P codes I don't remember the #, also what the camshaft sensor position sensor regulate ?
I think my mass air flow sensor went out my car is making this weird noise I just got my serpentine belt tensioner fixed and my check engine light is on and my car still jerks a little I’m very stressed because I don’t know what’s wrong now
I have a 2005 BMW that cranks but won’t start, but only when it’s cold out. BMW had it for 2 weeks replacing the fuel relay, which wasn’t necessary, after 2 weeks of experimentation they tell me it’s the DME but won’t commit to that being my problem, and they want $2400 to replace it. Could it be possibly be the mass airflow sensor?
Question For you ... i have a 93 mustang 5.0 and Im getting a 13 volt reading on the signal in and signal out wire when I should only be getting a MAX of 5 ... Any clue what could be causing this ??
I was revving my engine so that I could test out my two-step and all the sudden I start getting these codes with po111 po113 ... The only thing I can add to this is that my exhaust pipe was disconnected from the downpipe and my secondary oxygen sensor is just 2 inches away from the flange. It ran fine when it was cold but after it warmed up and started acting up. The next morning I started a cold but it did the same thing. I’m about to work on it now but I wanted to leave this comment because I’m wondering if having The secondary O2 sensor exposed can trigger something. 2003 Nissan Sentra spec V 2.5.
Dude I hope your getting paid for all this great info 🖒
Very thorough information, loved the video!
Thanks again bro, you saved me 130 bucks.
Please Help ! I have Honda Civic FD1 2009. My car RPM use to stay at 750 on idle but after cleaning my Air Mass censor now my RPM stay at 900 RPM on idle. Kindly Confirm is it OK, or some thing got wrong ?
Currently there is no check engine light.
now i understand the maf sensor but i have one question is if the pcm give that maf sensor 5 volt to function it and the sensor it self resend voltage to the pcm by ground wire ( what the function of 12 volt wire?? ) sorry for that question but im still beginner and English is not my native language
My allion 1zz 2003
is stalling at 110km/hr.It does not exceed that speed,any help
Wow is all I can say. Amazing video! Thank you for taking the time!
Great video! Thanks!!