What's a Manifold Absolute Pressure (MAP) Sensor & How to Diagnose It on Your Car or Truck
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- เผยแพร่เมื่อ 9 ก.ค. 2024
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Watch this video to learn all about Manifold Absolute Pressure (MAP) sensors, and how they help your vehicle run efficiently! You'll also learn how to diagnose yours in case you are experiencing engine running problems, or you have a check engine light code P0107B!
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I am now a fully qualified 5 star TH-cam mechanic. Will only service higher end Ferrari's and Lamborghinis. Nice rundown on map sensors.
+Tom OConnor Thanks for checking us out!
2013 chevy equinox 2.4l.. i changed my Map sensor and checked the wires and d voltage are good but the check engine light comes back on with the same Code.. please help
@@1AAuto 2013 chevy equinox 2.4l.. i changed my Map sensor and checked the wires and d voltage are good but the check engine light comes back on with the same Code.. please help
Good One!.
Brother,Iam one like yu. Had 3 situations no crank no start and I managed to start all of them..... I love yu guys thanks for sharing yr knowledge
A short, amazing and inclusive video on MAP sensors, I really appreciate the efforts of A1 Auto teams.
Nice job. I love when people do these type of videos
This video is gold, thank you.
This was a fantastic video on how to test your map sensor.
Very good info and knowledge and good camera work too.
Im at 115ft above sea level, Southern California, on my obd scan tool my barometric reading says 30. With engine on, in park, idling, my MAP shows 14inhg. Is this considered a low reading or normal? Thanks for any feedback.
I've learned a lot of auto repair tips off your videos. I humbly t hank you
+Eddie Garcia Thank you! We love empowering our customers and showing how to perform DIY auto repairs with our high-quality auto parts. 1aau.to/m/Shop-1AAuto-c
Should the readings stay high when gassing or just jump up as it did in your video? I'm troubleshooting my sensor and it does the spike but goes down again even if I keep my gaspedal pressed down
Thank you for this video.. very much needed. You say you put in a jumper wire at 4:50 With a fuse; what size fuse is that ? Or what size ohm resistor do I use to put a jumper wire on that ? Thanks again.
Can the map sensor be bad if at idle when you rev it, it doesn't go up but when you accelerate down the road then it increases finally. It's a Honda element 04. No codes but running rich negative 15 both short and long term. Thanks.
Great information thanks.
Very helpful 👌🏼
Is it ok to leave my map sensor on while spraying intake cleaner in throttle body(2012 sonata)?
This tech almost the John Malkovich speech and mannerism's down perfect, just a little bit lower pitch to the voice and drag the words a little slower. If he could get just a little bit closer I could watch this guy fix cars all day..!! Excellent video and great information, thank you.
Great video guys!
+Roger Rivera Thanks for checking us out! 1AAuto.com
Will a leaky intake manifold cause this sensor to read high or low at idle?I should add I have an old 5.7 Vortec Tahoe. very minor leak and no coolant going into engine at all.
Awesome series for the beginner tech.
+Richard Benson Thank you! We love empowering our customers and showing how to perform DIY auto repairs with our high-quality auto parts. 1AAuto.com
I have a question my car (lifan 320) is facing a problem because of the map sensor , I tried to replace it with another one but I can't find the one that fits my car is it ok to change the socket and pins of the map sensor getting out of the ecu
hi what size fuse you used. and can this jumper with that fuse be used for any map sensor testing. great job yes i learned something. thank you
That was pretty damn good, thanks.
+Domingo De Anda Thanks for checking us out! 1AAuto.com
I'm looking for a simple fix, my gmc jimmy with the 4.3 vortex sometimes has a long starter start. In the morning it pops off quick. But after it sits for awhile. And then start. It's long. I'm hoping it's not fuel leak in the intake. Please respond. Love to hear thoughts.
YOU ARE GREAT
Superb 🤝
My 98 transam has this problem and I have taken off the plug but struggle to take off the sensor itself. Any tips?
What are the actual symptoms whilst cars running with a faulty map sensor?
I like this guy!
thanks so much
Thank you
Great video! Thanks!
So when he says he is testing between the two terminals, what does he mean ? Thanks.
Will the map sensor cause the p0300 on a 2007 gmc yukon?
I've changed all plugs all wired checked every injector cleaned each one and tested all work...still same p0300 code flashing check engine light and stability track lights on
Cool man
all of these videos are great , unless like me, your van wont idle and barely runs goosing the throttle, and your OBD scanner/ code reader gives you a version of; "sorry, we're not happy plugged in here" every time you plug it in.
Or you can slap a new one on if you get a change it works if not return it!🤣very in depth and great video thank you!
Is this the right sensor for my 2015 f150 2.7l v6 throwing a P007b code?
Hi, can you tell me if the pressure reading from a MAP should be dead steady or can there be some variation? I have three pressure sensor in a bmw m235i ( ambient pressure, intake charge pressure and manifold pressure). Two ( ambient pressure and manifold pressure sensors) are dead steady at 1030 hpa whereas the intake charge pressure sensor varies between 1027-1033 hpa when using a ODB scanner . All readings are before starting the engine. I'm experiencing a fault code (Throttle valve opening angle absolute pressure intake pipe comparison pressure too high) on startup and was wondering is the MAP sensor which is showing a variating value could be the issue.
You ambient temperature should stay the same, it only varies when the outside atmospheric pressure changes. The MAP sensor will change and vary when you start the engine. Just like in the video.
Hello sir i change my manifold map sensor in ecosport why my ccar wont start. What should i do sir
Could a bad map sensor prevent the vehicle from all the way up to overdrive 5th gear?
What symptoms does the vehicle show when the MAP sensor is bad?
Mine had no symptoms but the check engine light came on and this is the code popped up...
howzit
my MK3 Golf 2lt have short to ground on the MAP sensor connector as per the dio, when i connect the sensor the car just dies even if you hold the rev now i decided to unplug the connector and runs but does not have power i some times have to climb the hill on the 1st gear
where can i start resolving this issue
Helpful vedio
+Mohamed Muhammad Thanks for checking us out! 1AAuto.com
Definitely i will subscribe. He is a good teacher but bad camraman. But it’s okay i can learn from him
Hi. Can a bad map sensor gives p0299 error code?
I WAS THINKING OF PURCHASING A AUTO SIM PRO BUT THIS VIDER HELP ME UNDERSTAND. ALL I NEED IS WIRING DIAGRAM FOR THE CAR'S AM WORKING ON
My chevy impala 3.9 have 2 map sensors and I was told there the same but the connectors look different
Im having an isue with my map sensor It has the 5 volts reference ,has a good ground but the signal stays at 1.95 volts when conected to te sensor ,should it be higher and decrease as the pressure increses ??
You should see the voltage raise as you open the throttle.
that size fuse did you use please
Good video - curious - what model scan tool was that you were using?
+billbled The scan tool we have available is part 1AXAA00021.
What are the physical/driving symptoms of a bad MAP sensor. And then also for the Mass Airflow Sensor?? Thx for great videos guys!!!! (and gals 😁)
+Tube-dude We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c
A bad MAP sensor may not allow the car to start at all-it will crank but won’t hold the idle at a level that will keep the engine running; it will just die. While the RPMs are high-say, while cruising down the highway, nothing would happen, but the engine would die as soon as your foot is off the gas AND the RPMs drop.
MAF isn’t so severe. My car will start and run with it unplugged. For how long and what problems that might cause I can’t say.
@@Phineas1626 what would cuz my car to turn off if I'm at a stop sign or red light.?
@@Thethe49er bad MAP and/or MAF, or bad idler valve. depends. seeing as this was a year ago I wonder what was the final cause of ur problem?
I use a cheap $10-20 bluetooth OBD2 adapter and $5 Torque app for Android. Works great on a phone or tablet. Pretty sure it will do all these tests, depending on what the ECM will allow it to read. I worked in a garage for a couple of years and used a several thousand dollar Snap-On Verus. Torque will probably do about 70% of what the Verus would do.
Same here but you are not able to read all the data just getting fault codes
What should the kpa reading be for a good map sensor?
You can find this in service manuals. I don't know if this is common tho
Hello I’m dealing with a 2015 Ford Focus with a bad barometric pressure sensor code p2230 and I’ve called ford and every auto store you can think of and nobody can tell me the location or anything about it. Any help would be great.
I have a 98 chevy 5.7 vortec pos. Lol. I have the po108 code. Dosent pop up untill the truck either dies or struggles so bad to stay running the tach drops and act like it out of time or running on only 2 cylinders. Wont start back up unless you try really hard but still struggles. I delete the code and in a matter of seconds its back to normal. Will run for 20 kins or so before acting up again. It did this that other day I deleted code and got a week out of it before it acted up again. When it's not acting up it starts hard and dosent start or sound right running but running ok. Know I have done so much t this engine I've changed every sensor wires plug wires cap rotor temp sensor knew MAF brand knew intake. And alot more. I dnt see how this map sensor could cause this am I right?
The map sensor basically acts like a brain. It can make your engine run all kinds of funky random ways. My guess is this is your problem
Did u ever figure out wat was causing your symptoms? My truck is having identical issues and replaced tons of stuff so far nothing is working
4:15 what is the ground (black wire ) connected too? Can’t see
Thanks for the video👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
+Salvador Gutierrezr Thanks for checking us out! 1AAuto.com
my scann tool el cheap o. is showing the intake manifold absolute Pressure at 4.78 PSI at 800 RPM, and about 5.36 PSI at 1800 RPM. why is mine in PSI. is it wrong?
Hi i need help with my MAP sensor wiring harness, i have a civic 9th gen R18z1 I'm facing an issue with the engine hesitation but when i wiggle the wire the hesitation went away however there's no check engine light or any sort of code on scanner,if anyone can help me on this issue I'll be grateful.
Cheers
I'm no expert but sounds like a break in wiring harness . Buy a new harness cut wires and use heat shrink and solder further back so its tidy . Can do testing first to check
what is it indicate if i switch on the ignition and get 3.8v from the signal? The power is 5.1v? (i did not connect the sensor )
Good morning everyone can anyone tell me where my map sensor is located on a 2008 casillac cts4
Okay. So I'm on my 3rd map sensor in a week and they all read 2.5v from the signal and 5v to the constant even when you slowly rev it up. What eles could be wrong? 1995 Ford Bronco 5.8
Would this be the problem on my 08 Silverado if the check engine light is on with it showing ENGINE POWER REDUCED, TRACTION CONTROL OFF, SERVICE STABILITRAK and got code P0641????? Need help and know dealership will charge a body part for a possible simple fix.
That sounds like some kind of traction control fuse. I’d need more info
Does A1 sell a code reader for 80s and 90s Ford's? I look for a code reader with the code booklet that comes with it.
You can usually just jumper 2 terminals under the hood somewhere. Look online for your specific car about where the diagnostic terminals are and you get a paper clip and short what they say to short.
its funny, MAP sensors are basically microphones. a diaphragm that changes a voltage range based on pressure waves. wonder if these could be used to detect knocks? i heard some cars have knock detecting microphones in them?
2013 chevy equinox 2.4l.. i changed my Map sensor and checked the wires and d voltage are good but the check engine light comes back on with the same Code.. please help
Got a vacuum leak somewhere
Would this cause my car to cut right back off when I turn the ignition
I put all the new ones in there injectors ignition coil O2 sensor I put all new ones in there what will be the problem again and I put a new one in there for met sensor
I have a 2008 Impala ss and the codes 106 and 108 have come up. I replaced the map sensor with a new one and the codes are still coming up. On my snap on scan tool the data is all good. I am at a loss as to what to do next is there a issue with the displacement on demand with these cars that can cause a map code if so what can I do to fix it
+dizzy66devil We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c
I am a qualified mechanic for 30 years I am at a dead end with info like I said before all the data on my works snap on scanner is reading ok. The traction control light is coming on when I start up the car and intermittent flashing at idle
Nicè
My scan tool live data dosent have alot of these features and it's a 400 dollar scanner I'm trying to figure out how to read it properly. My truck has hard start cuts out at times lose of power and I ha e changed so many parts and still cant figure it out. I have no engine light. Checked all wires.
Hi, could you tell me what is the tool that you using for ?
+Curious Engineer That is a diagnostic scan tool, which helps diagnose codes your vehicle has.
Thank you but I meant rather the sofware name? :)
Finally I founded it myself ;)
Can a bad MAP sensor interfiere with transmission? It shifts at high rpms and stays on 2nd shift i replace transmission already and still the same any advice thanks!!
I have a 2000 gmc sierra 5.3
Check your TPS
I have a 2008 gmc sierra 4.3 v6 . The transmission shifted hard from 1st to 2nd. Would almost give you a whiplash. Changed the throttle body and the map sensor and the problem went away. Don't know which one it was.
could this be why my 2002 vw jetta tdi has a hard start problem ?
+Tom Green We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c
What code scanner is that?
So, my Veloster Turbo isnt throwing a code for anything (aside from O2 sensing due to gutted cats) butvI noticed myba/f ratio measured is constantly hunting for commanded by up to +/- 4 points. Constantly oscillating under cruise, idle, or WOT. Will a bad MAP sensor cause this? And, it just died the other day when I pushed in the clutch coming to a stop. Started right back up. 🤷♂️
Wish I knew how to check all that myself ..... I've been having a lot of problems with my car and maybe it's just something as simple as that...my car jerks when driving and makes a weird noise .
weird noise can usually be traced back to a faulty OR functional "weird noise maker doo-dad ", thank me later.
@@jamesradcliffe3985 this is 8nteresting I get an odd noise too sounds like a low frequency vibration on and off . A map wouod cause this ? If so I'm getting one today looking at the new ones and from cleaning mime I'm sure I don't recall seeing the sane elements that should be present . Likely my issue
What if the wires were not good what do you do then?
I can't find mine on my 01 lincoln tc
hi guys
if the barometric pressure isnt doing anything at all. that means, it needs to be replace right?
Yes- order some new weather... lol
How u take it out ?
bien
Why did you not test the sensor? What ohm should a map sensor have?
Can this cause your battery to die? I have only one check engine code and this is it. I tried to turn my truck on this morning and it clicked and died.
Where do you connect the ground to ??
Negative battery post
How to program computer bold
My 2006 Silverado 5.3 reads 10inhg turned off and stays the same when turned on 🤔 replaced my map sensor but still stays the same
+JayR We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c
I have a 2015 Chev Malibu with 177000 km and it shows code 0089 and code
0016. Code 0089 says it's the fuel pressure regulator and the 0016
says it's the
I replaced my absolute pressure sensor and it still has implausible error code, yea idk
Just change the map sensor out folks for get the monitor
Map sensor 20ll srx
So use a computer sensor to diagnose? That’s all? I think there may be other things that would be helpful to know other than “buy a scanner and scan it”
No check engine light 💡 comes on -I have to pump the gas pedal a few times for my truck to start if I don’t it won’t turn over 2. It kill’s while I’m driving -- someone in the comments help me out 🙏 2012 dodge ram 2500 Hemi
Just a curiosity? School was a long time ago but it "was" called a Manifold Atmospheric Pressure sensor. Times change.
+kicknsystm The MAP in MAP sensor stands for "Manifold Absolute Pressure".
No
my check engine light came on after 6 months bummer seeing it on after its been off for awhile the code told me map sensor and some guy at oreillys mentioned my engine cabin filter not sure how he connects that to map sensor will bad engine filter do this im no mechanic so go easy on me lol
How to diagnose
Step 1 - Buy an expensive scan tool
My car starts and dies after a short trip
Dude why didn't you show how to take it off?
They literally only have a couple screws , nothing to show . The sensor will have a type of either Teflon or nylon seal or ring . Easy
Blah blah, its here! Blah blah, you never show what your steps are to get to it...or where "it" is. thanks for wasting that much of my time.