A Bad MAP Sensor - Symptoms, Causes, and EASY Fixes!

[@Tinrs80]

I recently had a bad map sensor in my Chevy. It mainly acted like it wanted to cut off at idle and had hesitation when hitting the gas.

[@8020Media]

T - Thanks for sharing your experience!

[@conniedeniseboswell2948]

I was told when unplugging the map sensor if the car keeps running its bad, but I got a new one and it keeps running to. So both are doing the same thing, cars at idol. when I unplug the sensor so my guess is that isn't good information not surprising seems how there's never much information on my car at all.

[@thecarguy2470]

My map is 27 years old. It didnt throw a code but in testing with a good scanner its showing way to much voltage and nesrly no kpa at any given time. I bought a new one and it resolved the problem what you left out is it causes tons of misfires snd csn even mske your transmission not shift at all or very improper. My 2.2 Chevy now gets much better fuel mileage and it fixed several other issues. No more misfires no more not going into lock up and it nearly doubled my gas mileage.

[@8020Media]

T - Thanks for sharing this insight. It will certainly help future viewers.

[@devilmangamez8615]

I got the P0107 code (map sensor on a 2.2 Ecotech) and my car won't start now. Would this sensor going bad keep it from starting? It cranks, but no start. I put new plugs in and they have fuel on them. Its definitely too rich on fuel

[@8020Media]

D - It's possible, but oil on plugs could be a a failing valve cover gasket.

[@devilmangamez8615]

@@8020Media Not oil....Fuel. I checked fuses and kept on replacing parts and checking vital parts of the engine by taking it apart. Everything mechanical in the engine is fine, including the head gasket. It's not getting spark. I replaced the plugs, coil pack, ignition control module, starter, crankshaft sensor, and now the map sensor. I also tracked down all 3 of the engine ground wires and replaced them. It's still not firing. It's cranking, but that's it. Now my battery is dead from all the attempts to restart it while adding new parts. But I am jumping it, with no avail. Fuel pump is working great. Replaced it 7 months ago. The plugs have a very noticeable fuel smell and I even smell fuel after trying to start it. I let them dry out and try it again with the same result. I'm about to replace the TPS and then the PCM next week as much funds are running out till next payday....OR i'm about to have to call a guy that charges $130 an hour to diagnose my car....I just know it's going to be something simple I have missed in the end

[@8020Media]

D - Sometimes it is beneficial to have it looked at. Sounds like you've spent quite a bit of money on it already. Sorry to hear that it hasn't solved your issue.

[@childrenofthegrove]

My 2006 bmw 325i has been going in and out of limp mode and also having rough starts and rough idle. Replacing map sensor asap as I did get a code pointing to the map sensor. Hoping it fixes my issues 🤞

[@8020Media]

P - Might not be a bad idea! Keep us updated.

[@andrewreed7607]

What no update?

[@aleksandarkuznetsov7642]

Do you have an update?

[@PaulRacko2]

On OBD1, such as older Fords, Lincolns and Mercury 1981-1995, the MAP fault code is 126

[@8020Media]

P - Thanks for sharing this insight.

[@Luigi13]

Thank you very much, good information indeed!

[@8020Media]

L - Thanks for the feedback! We hope it was helpful.

[@duddleypiercejr.]

Great explanation.

[@8020Media]

D - Thanks for the feedback! Hope it helped.

[@socks2441]

my check engine light turns on with the rest of the lights when i turn on the car. but it has NEVER illuminated when my car has had any issues. its quite irritating. the codes are presumably still logged though, so i should check them. i believe the altezza is obd1? because its sold outside the US it didnt get obd2. im not sure. but that means i can short the pins and count the flashes, or buy a cheap obd1 scanner?

[@8020Media]

S - That would be the best route.

[@SubePelayo928]

I have a 04 Jimmy 4.3Vortec. I’m having the P0172 and p0175 code ( banks 1&2 too rich) along with the p0101 code. MAF shows 9g/s and -25 fuel trims but O2 sensor are showing Rich conditions. So I replaced the MAF(brand new) I replaced the Spider injection (brand new) but I’m still having the codes. When I unplug the MAF it drives a lot better and fuel trims are near 0. Can a bad MAP sensor cause the MAF to read higher at idle? Requesting more air or something along those lines? My O2 sensors fluctuate up and down as they are suppose to. Bank 2 sensor 2 O2 is steady around .6-.8 which is reading high fuel after cat still. Not sure what else to check or change

[@8020Media]

S - We have a great video that may assist here: kzbin.info/www/bejne/i2Sth5Zpi7GUnqM

[@SubePelayo928]

@@8020Media I appreciate it! That was for a lean condition. I was having a rich condition. But I figured out the problem. I had a faulty cap solenoid that wasn’t throwing a code. It was pulling gas fumes from the evap canister

[@8020Media]

S - Nice! Thanks for coming back and updating. It'll be beneficial for future viewers.

[@austinphillips5036]

I had my engine light come on right after replacing the timing chain on my F150. Used a cheap OBD II reader and found it was turbo over pressure reading. Cleaned the sensor coming from the air box and problem solved. Looked like the mechanic changing out the timing chain might have got some dirt in there. I already had a can of MAS cleaner on hand, so cheap fix. I'm sure if I took it back to fix the problem it would have cost at least a $125 diagnostic fee. 😅 7:16

[@8020Media]

A - Love hearing this. Thanks for sharing your experience!

[@kskate91]

Would you recommend buying one from a wrecking yard? Those sensors are super expensive. My Hyundai accent needs one

[@8020Media]

K - Probably not. But they aren’t that expensive, not sure where you’re looking.

[@asmermax2251]

So im having a issue with my 2008 ford focus in the beginning i had a p2196 code for a 02 sensor bank 1 sensor 1 stuck/ rich biased code i was having rough start ups sometimes its struggles to start and sometimes it starts right up and when it does the rpm's drop then fluncuate then idles and when i put it in drive the rpms drop and slightly struggle to rise and when i try to drive the car it stutters ,hesitates, jerks and has low power and cant really get higher than 4k rpm's and if im at a stop light the car may or may not stall and if it does i smell feul amd get a banana check engine light i replaced the 02 sensor and also put in a new valve cover gasket due to a leak and new spark plugs wich had a light colored charred color on them And after the new sensor the code and check engine light went away but im still left with the same syntoms and when the car stalls i get the p2196 code and check engine light again but when i start the car back up the check engine light is gone but still poor engine performance. Im lost between sensors, feul and air and could really use some guidance

[@yandelcampos9903]

Did you ever figure it out ?

[@southenglandbusspotting9965]

Hi, I have an Abarth Punto with EVAP fault codes. I also have a fault code for Overboost and Turbo Vacuum. I’ve done a smoke test and it’s got no leaks from the manufold/EVAP side and also the turbo system. Plugged my TopDon in and on live data, I noticed the Air Pressure was reading at 25000Mbar on idle snd 8000mbar when idling. Is this a sign of a failed MAP sensor?

[@jjustice4207]

I have a 1992 ford f150 standard transmission and the rpms surge to 3000+ rpms. Continues to surge when in gear, making it very hard on my brakes going over mountian passes. I Cleaned the trittle body and replaced the air pressure control valve. It helped but it still surges, would the MAP sensor be my next part to look at?

[@8020Media]

J - Are you getting any engine codes? It wouldn't hurt to clean the MAP sensor to see if that helps your symptoms some more.

[@user-rh5dv3mr9x]

Can a P0160 code be related to a bad map sensor? I had all my o2 sensors replaced and still getting that code thanks

[@8020Media]

U - It certainly can!

[@estelamontilla3170]

Can a weak battery cause this code to come up? Recently needed a jump and didn't have an engine light until after the jump.

[@8020Media]

E - Do you have any engine codes? Not likely.

[@solskivenrt7516]

Very informativ vid 👍 Anyone that can show where MAP sensor is located in my Mazda 5 2010 diesel? 😊🇳🇴

[@8020Media]

S - Thanks for the feedback! Hope you can find it online somewhere.

[@astridaberzina2354]

Can 36F400,36F600 codes be related to bad MAP sensor? Thanks

[@8020Media]

A - This video may be helpful: kzbin.info/www/bejne/n5vIn6mdfsmXisk

[@astridaberzina2354]

​@8020Media, thanks for your reply. Yes, I already saw this video, but the thing is ,he didn't really tell what he did. He stopped at Egr and said he needed to inspect ,check that ,but after not even saying what the problem was with egr....

[@8020Media]

A - We do think it is EGR related. However, it seems like this code is quite vague, so we're going to have to do some digging.

[@astridaberzina2354]

​@8020Media mine been in for recall 3 months ago, so shouldn't be clogged etc... Car in drivetrain and can't get it out of it! 😢😮

[@8020Media]

A - Sorry to hear. Hopefully this gets figured out for you!

[@jimrup3528]

I’m getting map sensor symptoms but not getting any map sensor codes. I have gotten fuel is too rich and misfire on cylinder 6. Truck runs fine unless I have a load or I accelerate too fast. Truck will start jerking/shaking and will lose power, Engine light will blink. When I let off gas and and either coast or come to a stop the light will stop blinking and truck back to normal

[@8020Media]

J - interesting. It could be the MAP sensor. An easy test would be to clean it and see.

[@jimrup3528]

@@8020Media forgot to mention, I pulled the map and it was dirty. Cleaned it with the spray and it still looked like crap. Put it in, truck ran a lot better for couple days but back to doing the same thing. Replace the map?

[@8020Media]

J - Might be your best bet. It's not a very expensive part. Keep us updated.

[@jacobbirket6120]

I’m having the same issue. Did you replace the sensor? If so did it fix your problem

[@jimrup3528]

@@jacobbirket6120 have been too busy to get to it but I’ll probably do it next weekend. I’ll let you know if it fixes the problem

[@crackavelli870]

Could a bad maps sensor make one of my coil packs keep going bad. I have a 2012 dodge avenger

[@8020Media]

C - Not likely, but it can make your engine misfire.

[@crackavelli870]

Ok thanks, I got an Avenger that keeps having the same coil go out. Trying to cover all my bases

[@8020Media]

C - Keep us updated on this.

[@jessicazoubek9678]

I just bought a 2010 dodge charger and while I was driving it the car just stalled and turned off. I was in drive and when I put it into park I turned it off and back on and the check engine light was on. After so many rotations with the car being turned off and on in that same night of when this happened now the check engine light is not coming on And we were able to drive it home OK. I’m still Freaked out over this because I see that this is an issue with this type of vehicle based on other peoples problems … I read where someone replaced the map sensor and it fixed it. Could this be the case? Everyone I saying on the dodge charger it won’t show any codes after this happens

[@8020Media]

J - Best bet would be to pull the code when you get an engine code. That'll help you diagnose it easier. We also have a video on vehicle stalling that may be helpful: kzbin.info/www/bejne/bZPUcnyYjreXpMU

[@jessicazoubek9678]

@@8020Media I will today will it still show up even if the check engine light isn’t on anymore? It came on when it happened but now it’s not on ;(

[@8020Media]

J - Sorry to hear. It is still possible for engine codes to pop up even if there isn't a check engine light.

[@jessicazoubek9678]

@@8020Media it’s the crankshaft position sensor

[@8020Media]

J - Glad you found the issue!

[@joerockfran5858]

04 2500hd silverado map sensor is 138.95$

[@8020Media]

J - Thanks for the insight.

[@emmanuelramos4772]

I think I have a bad map sensor it would act like if it was starving for gas it would idle for a few seconds then shut off , I got it to a point here it would idle a little better but as soon as I gave it gas it would shut off , so I disconnected my sensor and started it back up and it would stay running for a fat min but still felt like it needed gas . As soon as I plugged it in it would die when I would unplug it it would stay running , I changed my spark plugs , coils injectors and pump all because I thought those where my problems first , I am no mechanic

[@8020Media]

E - Are you getting any engine codes? You can try cleaning it to see if that helps too.

[@emmanuelramos4772]

@@8020Media I just ordered a new 1 I figured it was done for since it would stay running when I plug it and it shouldn’t do that it should just make the car die if unplugged

[@8020Media]

E - Keep us updated!

[@emmanuelramos4772]

@@8020Media update map sensor did it running better then ever 🤘🏾

[@8020Media]

E - Love to hear it! Thanks for coming back and updating us. It will certainly be helpful for future viewers.

[@jaym5938]

Oh how easy it would be if there were codes. No codes. Car has calibrated itself to drive okay; but, if the battery is disconnected and the comp resets, the car won't drive well at all :/

[@8020Media]

J - Interesting.. What symptoms are you getting?

[@patrickangelo66]

How about for P0222 error code? Nissan Terra 2019 model

[@8020Media]

P - This video may be helpful for your research: kzbin.info/www/bejne/sJuxq5l_pNmbo9E

[@bigbusiness6903]

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 🙏

[@8020Media]

Sounds like your throttle body might be stuck or something. You might still have a code hiding in there even if you don't have a check engine light so try reading codes

[@bigbusiness6903]

@@8020Mediaok thanks- I changed the MAP SENSOR AND ITS DOING BETTER BUT STILL KILLS WHILE IM DRIVING SOMETIMES- it’s been 2 days since I changed it

[@8020Media]

B - What do you mean kills while I'm driving? Like it's stalling? If so, this video may be helpful: kzbin.info/www/bejne/bZPUcnyYjreXpMU

[@siwel86]

Hello, did you ever figure this out?

[@bigbusiness6903]

@@siwel86yes I did

[@Chrislifestyle1993]

Limp mode please help can't get it past 30

[@8020Media]

C - Any engine codes?

[@Chrislifestyle1993]

@@8020Media well it did say throttle sensor 1992 k1500 gmc 454 big block limo mode none electric I have carb I'll try map sensor replacement first

[@Chrislifestyle1993]

I'll try replacement map sensor

[@8020Media]

C - Keep us updated on this! We hope it solves your issue.

[@Chrislifestyle1993]

@@8020Media code p34 I did the paper clip a and b

[@frankieb2220]

I feel like Fool.Changed OXYGEN SENSORS..NEW PERFORMANCE DOWNPIPE..CUZ I WANTED TOO..LOL..ECT ECT PARTS..GATTA GET THIS PART..TO BE CONTINUED

[@8020Media]

F - Keep us updated! We hope the video helps

[@johnnylewis-vb1co]

Can you clean it

[@8020Media]

J - You can certainly do this before replacing to see if cleaning it fixes the issue.

[@LL-eb7bn]

​@8020Media hey there! Just wanted to make sure I heard you correct. You CAN clean MAP with MAF like crc? also do you know of a Cleaner I can use for Mitsubishi? Because CRC product says not to use on Mitsubishi 😅😢

[@CadillacDriver]

​@@LL-eb7bnyes. You can use MAF cleaner for MAP sensors.

[@LL-eb7bn]

@@CadillacDriver Thanks

[@8020Media]

C - Thanks for responding here!