I have only had one go bad recently in my 99 Lincoln Town Car. I was getting a bit of a rough idle and randomly a lot of destination and part throttle. Turned out my car would randomly think it was a small plane, flying at 14,000 feet. For reference, it spends most of it time at 100 or less feet above sea level.
How I knew my mass airflow sensor was going bad. It wasn’t bad yet, but it was well on its way. When I turn the heater on that goes through the vents like to defrost my window, my SUV would start jumping, same with the air conditioner that goes through the vents The same Vince as above I got the mass airflow sensor cleaning spray that did nothing. Oh one more thing my gas mileage sucks matter fact it’s being replaced today I have a 2019 Kia Sorrento L with 138,216 miles. Yes I know a lot of miles for a newer vehicle I drive for Uber and I travel a lot. This explains my mileage. I will come back later and let you know if my issues are fixed by replacing the mass airflow sensor
Thanks for the comment! Even though the cleaning spray didn't help, it's good that you're getting the sensor replaced. I hope that resolves your issues and improves your SUV's performance. Don't forget to update us on whether the replacement solved the problem.
@@jonesy4588 because they’re cheap and affordable ! not all of us can afford 50,000 or $100,000 or $200,000 cars and I’m not saying that to be rude at all ! please don’t take it that way, because that’s not the way I mean it. I just wanted to add that in there because it’s hard to tell in a comment if somebody’s being rude or not. so I just wanted to make sure you know that I’m absolutely not being rude whatsoever.
@@carproblemsmax Absolutely did not fix the problem. Turns out I had a misfire and one of the gaskets was bad which was leaking oil into my ignition coil. Also getting onto spark plugs this making me have a misfire parts are on their way. Thankfully I absolutely know how to fix this. Also confirmed with check engine light, scan, because check engine light did come on. PS turns out a 2019 Kia Sorrento doesn’t have a mass airflow sensor. Good information to know lol. I absolutely knew nothing about cars before purchasing this vehicle, but now that the warranty is out because there’s a lot of miles on it I’m learning how to work on cars one step at a time. so thank you to everybody who has helped me along this road. It’s very interesting. I’ll tell you that much !! Thanks for being gentle with this little old female who now knows more than her husband about cars now 😈 never thought I’d see that day coming !
replaced my alternator and after the car ran like absolute shit, was convinced it was an alternator problem and was in the process of returning it, realized the sensor bracket broke, hopefully that fixes the issue
Have this issue. Was thinking O2 sensors but they got continuity. About to pick up a new MAF sensor and see if it fixes it. I got the same symptoms as everyone. Rough idle and RPM needle dance not always but when I come to a complete stop
My Toyota Mark 2 runs fine but when the check engine light comes on, the car loses power and it doesnt respond to the gas pedal while the engine still runs. The engine dont respond either to the gas pedal(Engine sound stays the same). A machenic diagnosed it and showed a faulty MAF Sensor. I need help if this is the sole reason for this issue or there could be other contributing engine faults as well. Please help a brother out. I'll greatly appreciate a response to my comment please.
@Jessie Barber for me yes it was the MAF it was super dirty I sprayed some MAF cleaner and it did the job. A good way to tell is if you run the engine and disconnect the MAF and give it has the vehicle won't turn off but if you connect the MAF and it's dirty the car will turn off or jerk
Same thing happening to my Honda accord now when I turn my ac on it makes things worse & vibrates even more. I replaced a broken motor mount, 2 o2 sensors bcuz it set off the check engine light & now the cheap MAF sensor isn’t working & may need a new ac compressor. But I def notice every time I pull to a light or stop sign & pull off, it wants to die on me. All this started after hitting a median in the dark 🤦🏼♀️
i drive mine for about 10-15 mins and after that when i’m coming to a stop it takes like 3 seconds for it to go after i give it gas and when i drive it it will make some loud pops , also when i’m in idle sounds like it’s going to shut down like rpm’s kinda dancing a little bit
@@christianruelas1460yea mine sounds like it has a monster cam in it. And I have to really use my throttle when driving from a stop. I’ve had to drop my clutch countless times just to keep it from dying. I’m gonna try the MAF cleaner but I also got a fuel filter if that doesn’t work.
My 2011 GMC Sierra 1500 SLT throws on service stabilitrak & traction control lights but it only goes into limp mode (engine power reduced) when I turn on my A/C. But after watching this video I unplugged the MAF sensor with the truck running and it did not turn off so I’m guessing that could be the problem. What do you guys think? Is there some connection there?
2017 Nissan Titan... after idling for 10 or 15 minutes drove about 5 minutes to home and noticed as i was slowing to turn i drive the idle stayed at 1200 even after putting it in park and the light came on. Going to try cleaning the MAF and replacing the air filter this morning. Dont have a code reader and cant get an apt for a week.
My 2002 bmw 325i act like it doesn’t wanna stop sometimes. I did a diagnostic at auto zone and it said it was this but I’m not seen the symptoms that’s stated in the video
Yes, a faulty MAF sensor can cause a reduced power mode in a car. If it faulty and not providing accurate readings to the ECM, it can cause the engine to receive too much or too little fuel, resulting in reduced power or even stalling. In some cases, the ECM may activate a reduced power mode to protect the engine from damage if it detects an issue with the MAF sensor or other related components.
My 2020 silverado did that after I accidently touched the the negative terminal with the wrench on the positive. I was able to get around it by using one of the spare auxilery terminals on top of the battery. You may just need a new battery.
Hi.. Thanks for the video.. I have a touareg vw 2006 model has p0102 code and tcs light came on..thevair bag light also was flashing sometimes since long time..Replaced maf sensor.. It was fine for a half hour journey.. Tcs also went away..after hslf hour tcs light came on and scanned by odb2..code getting now p0101..totally confused.. Checked air filter snd hoses everything fine..intake manifold was removed once a time replace the head cover gasket.. It is fine fitted by looking..no leaks found anywhere.. I guess while code p0102 got i was got a misfire cilynder 1 and after multiple.. Do i removed out the spark plugs outvand checked one plug was little bent its metal rode where the spark occurs..removed out all plugs and coils..cleaned all with petrol and the bent plugs adjusted spark gap's and installed back andvsame time replaced maf sensor also.. After i am gettimg p0101 code.. Do uou have any idea about it..? It spatk plugs or coils damaged due to cleaning by petrol.? Is this bad coils or plugs cause this code..? I have a sudden or lazy pick ups sometimes while driving..gear shifting also not smooth sometimes.. But when clearing codes its runs fine for a hslf hour..after Tcs is on.. Air bag is also flashing some times....i am totally confused what to do.. Kind uour help please.. I am an Indian from Kuwait..
The P0101 code indicates that there is a problem with the Mass Air Flow sensor circuit range. Even though you have replaced the MAF sensor, the problem persists. Here's what you can do: Check the wiring and connectors to the MAF sensor for any damage or corrosion. Make sure they are securely connected. Inspect the air intake system for any leaks or damage that may be causing incorrect readings by the MAF sensor. Check the spark plugs and coils for any damage or wear. If the plugs are bent or damaged, it could cause misfires and affect the performance of the engine. Check the throttle body and clean it if necessary. A dirty throttle body can cause issues with air flow and affect the MAF sensor readings. If none of the above steps work, you may need to have a professional mechanic diagnose the problem with specialized equipment. As for the TCS and airbag lights, these could be unrelated issues. It is recommended to have the vehicle diagnosed by a professional mechanic to determine the root cause of these problems.
We have changed bank 1 censor 2 oxygen censor twice on our 2014 Chevy traverse and we are still having the same issues and getting the same code. Our car is bucking/jerking when accelerating. Now I’m starting to think it’s the MAF censor. This is a headache lol.
When im starting my 2010 corolla if i start it right away it turns on then idles for 2 seconds then stalls on its own, i have to let it sit for 5 to 10 sec before starting and the throttle is electric and never responds either it doesbt accelerate or goes full throttle no matter how much gas i give it. Also my rpm is always going up and down i know the radiator fan can cause that but this happens even if the fan is off, a while ago it would have the rpm go to 1k then 250 and repeat it until it stalled and when i smack the maf sensor a couple times with a screw driver it idles fine. Im pretty sure these symptoms confirm that its the issue correct me if im wrong
I am looking for the map sensor on a 2015 GLA 250 4matic do you happen to know where that sensor is located on that vehicle or if you know where I can download a free workshop manual
My car surges from 500 rpm to a 1000 rpm when put in park and is just idling but when put in drive or reverse it idles fine and drives fine but when stopping at a stop sign or traffic light it will almost die like it's not getting enough gas and idles rough until I give it some gas to go. Could this be the MAF sensor or something else. This just started about a week ago. It's a very old Pontiac Grand Am GT with the 3.3L V-6 with only 78k miles on it. I just can't figure it out. Thank You !
The symptoms you're experiencing could be caused by a faulty idle air control valve (IAC), dirty throttle body, or a vacuum leak. The Mass Airflow (MAF) sensor could also be a potential culprit, but it's less likely to cause the issue you're describing.
@@carproblemsmax I will check that out. I checked for loose hoses and vacuum leaks but didn't find anything. I will replace the IAC valve and see if that helps. Thank you for the reply back. I really appreciate that.
I have a ford fiesta flair ...it has got a hard-starting problem, however in order to start it ,i must quickly tap for a couple of times while im cranking😢
Would this cause my bike to Sputter feels like it’s needs gas like it’s has no gas , I replaced my coils , plugs . Injectors and pump and still doing the same , so I disconnected my MAF and it would run for a few secs but ruff I would give it gas and it would like hesitating like it didn’t have any gas then I’ll plug it back in the MAF And it would die
Mine does the same thing when i slow to almost a complete stop. Died on me a couple of hours ago. Took 15 mins of cranking to start it. Mechanic coded it. Said it was MAS.
My 2007 Nissan Quest is also doing that. Car won’t accelerate when taking off from a stop. It goes into limp mode. I cleaned the maf but didn’t help. Could it be the throttle body or something else besides the maf. I’ve replaced the o2 sensors. The fuel pump couple other things. Each time it hasn’t help. I’m a new subscriber your information is excellent
im having this issue too, i bought a scanner and got a code that said the maf sensor harness has a weak connection. working on fixing this so not sure if it solves the issue yet
I have a 99 Chevy Silverado it’s turns and runs fine but when I come to a stop it sometimes turns off and I have trouble turning it on and or get it moving again what could my problem be?
ihave a 03 chevy avalanche and when ipull the maf sensor off, my engine does not die but ihave no codes ireplaced the pcm ialso traced the wires idid replace 2 ground and ialso replaced the maf sensor but nothing worked
When I start my car it is fine for a second or less then revs up a bit on its own for a second or 2, then back to normal. Shifting from Park to Reverse but before accelerating, it jumps/jerks like a nervous horse for 2 or 3 seconds then runs fine the rest of the day no matter how many times I turn it off or on or how long I drive it. I have already replaced plugs and wires and air filter. Could it be the MAF going bad? Desperately asking!
Do they ever answer the questions, mine is doing same and I'm kinda stuck right now. Whenever it picks reves on it's own it looses power and jerks later
Mine is doing the same for awhile now..I've bought a new maf and.still.does that..I changed out the plugs and still doing that..next I'll be changing out the oxygen sensors
@@southwest6720 I tried the plugs and wires, air filter, cleaned the IAC, did a gas treatment thinking since I cleaned everything on the outside I should try the inside too and it's still doing it. Haven't replaced MAF yet but never thought of oxygen sensors. Hopefully that works for you!
Hi can i know what if my car is blowing black smoke only when in idle when i reved it. Went to wshop but no fault code . I tried to unplugged the maf sensor while car is running.. it didnt die either.. any idea what could go wrong n what should i check.. car is bmw216d f46
Hi! Black smoke coming from the exhaust when the engine is idling or revving is usually an indication of a rich air-fuel mixture, meaning that there is too much fuel being injected into the engine. This can be caused by several factors, including a malfunctioning mass airflow (MAF) sensor, a faulty fuel injector, a clogged air filter, or a problem with the engine's fuel system. Since you've already unplugged the MAF sensor while the engine was running and the car didn't stall, it's possible that the sensor is not working properly. However, it's important to note that unplugging the MAF sensor can also cause the engine to run rich, which could result in black smoke. Hope this help.
Hey buddy. Any update on your issue? I have the similar issue right now. Mech says my turbo needs recon. When I unplug the the sensor smoking stops, car does feel low on power either way but with black smoke plugged in. Thanks
Hi there, I have a problem with my Hyundai i10 4 cylinder petrol engine, it is 2009 model. The issue iam having is when Iam driving the car, I release the accelarator and rpm will go down to 1000 when I give acceleration again there will be a slight missing. This mostly happens in second gear. Cleaning the spark plug/replacing seems to fix the problem for some days.
I have a 12 Buick regal gs and I just tried disconnecting the maf sensor to see if the car will turn off, which I’ve heard is a symptom that it is not working correctly, so I cleaned the maf sensor with the spray, and I connected it back up started the car and the cooling fans came on.I also have codes p2271 and p0420, I’ve replaced the downstream sensor, done fuel treatments with b12 to try and clean the cat, and it’s now starting to get bad, with low power and potentially fuel economy
MAF Sensor: Try using a specialized cleaner to thoroughly clean the MAF sensor. If it still acts up, consider replacing it. Trouble Codes: Check both the upstream and downstream oxygen sensors. A faulty sensor can mess with fuel efficiency and performance. For the catalytic converter issue (P0420), if cleaning didn't help, get a pro inspection or maybe replace it. Fuel System: Replace the fuel filter if it's been a while. A clogged filter can hurt performance. Also, ensure the fuel injectors are clean and working right. Consider using a cleaner or getting professional cleaning if needed.
Yes, a bad MAF sensor can cause issues with the transmission and prevent overdrive from kicking in. If the MAF sensor is faulty, it can send incorrect signals to the ECM, which may result in a delayed or harsh shift, or prevent the transmission from shifting into overdrive.
I have changed the maf/and the map sensor and it’s still says it’s bad..I have also replaced the throttle body and alternator and plugs and coils and my 2014 Chevy traverse keeps going in reduced engine mode/service stabilitrack and traction control off. Any ideas this is driving me crazy for 2 months I also replaced the fuse box under the hood.
I got question here. My car really hesitate when i accelerate for overtaking but running well if normal driving. I find that if removed mag sensor connector my car hesitation gone. But engine check will appear and car bogging while in idle. Is this my maf sensor faulty?
I have problem with engine light and my car goes to limp mode. My error is P1102. I tried to disconnect maf sensor and car works fine. I did not notice nothing special. Well check engine appera again because maf was not connected but car was not went into limp mode. The tester showing 4.4g/s when ignition is off aroun 7g turn on, 15g with 2000rpm and 27-30g with 3000rpm. Do you think is faulty sensor? I own Focus 2016 1.5tdci
Based on the information you provided, it is possible that the Mass Airflow (MAF) sensor is faulty and causing the P1102 error code and the car going into limp mode. The fact that disconnecting the MAF sensor made the car work fine, albeit with the check engine light on, suggests that the sensor is likely causing the problem. The readings you mentioned from the tester also suggest that the MAF sensor is not functioning properly. The readings you provided show that the sensor is not providing accurate data, which could be causing the ECM to make incorrect fuel and air adjustments, leading to the car going into limp mode. Yes, I think it's a faulty sensor :)
I just installed a new MAF on my 08 Tahoe and I can unplug it and my vehicle stays running. Does that mean the new sensor is bad? Or will a vehicle still run with it unplugged?
hello there! i have the 2015 verso 1.6 diesel and the check engine light comes on with a p00bd fault code which refers to the mass air filter. i've done everything from changing the maf sensor to cleaning the air intake manifold but the faults pops up again and again. my electrician has inspected it twice and sais there is no wiring problem. any idea what it can be???
What are the symptoms please, my car has a rough idle on start and eventually turns off if I disconnect the maf sensor it no longer occurs but very underpowered and slow
Car runs and idle fine up to 30 mph but will not accelerate. Floor the accelerator and it speeds up slowly down hill or motorway on ramp I used a cheap scan tool and it said code error was MAF but that was because it wasn't getting cold air from the intercooler. MAF needs to be plugged in or engine does not know fuel mixture for air going in. You can clean MAF sensors but ONLY with MAF cleaner and be gentle, don't touch it. Sounds like the MAF is dirty or failed. @@rubik2379
@@rcklz2833 Yes I did it was the inter cooler which had a crack in it as it was bowed. It took me 5 minutes to find it. My wife told garage their master tech was crap and I should do his job for him.
I had a o2 sensor code pop up, the code went away when i unplugged my battery. My car barely and i mean barely wants to move,i have to touch the gas like a feather and the car moves so slow i have absolutely no power i have to slow roll and cant climb any hills and i can barely reach 40mph. When i push the gas to hard the car is just super loud and will not mive at all unless i feather press the gas. Any ideas??
I had that problem last week my car was barely going anywhere and was shaking a lot I changed and cleaned a lot of stuff hopefully one of these helps, I changed my motor mounts (car was still shacking bad), then cleaned my maf sensor with new air filter( it road a little better but wasn’t driving correctly still), then I changed my transmission fluid(this didn’t do anything far as what I felt) , then I bought some iridium spark plugs and it stopped the car shaking and the car ran a lot better so I basically did all that just for spark plugs being bad
My bmw 335i 2008 show me check engine light, and show me the fault is P0113, P2091,P0238 i will go to smog check shop , guys told me you remove the check engine light then i check the smog test
I have 2006 300 c my car used to go into limp mode last year and even turned off while driving a couple times. Recently i had the fuel pump replaced and have been having problems since. Sometimes ill run the car for 45 minutes come home and let it sit for anorher 45 come out and try it and it wont start. I recently had the throttle body and the cam and crank chnaged cause of this but still the same. My mechanic told me he got a maf code recently and today got a egr position code. Do you think it cohld be the maf ?
It is possible that a faulty MAF sensor could be causing the issues with your car. Additionally, the EGR system can also cause drivability issues if it is not functioning properly. Based on the codes your mechanic has received, it is possible that either of these components could be contributing to the problems you are experiencing.
@car PROblems im gonna try the egr because ive heard the egr can activate the maf code so im wondering if changing or cleaning it will make a difference
All cars should still run when the MAF is unplugged. When the MAF is unplugged, the ECU reverts to using standard look-up tables for typical airflow rates, at given temperatures and speeds. Your car will run a lot less inefficiently without the MAP sensor, and MPG can suffer by up to 20%... but the car will still run. Some small budget cars (like the 2001 Renault Clio 1.2 I had years ago) do not even have or use a MAF sensor. They use Manifold air pressure (through a MAP - not to be confused with MAF - sensor) along with look-up tables.
So I unplugged the Maf sensor on my 3800 engine. You can actually tell a difference. It wouldn’t hardly stay running but then I plugged it in and started the car it runs great. I’m wanting to know if it could half fail? I’ve been troubleshooting my car for 2 weeks trying to find out why it has no acceleration it runs smooth but no power? Help please!! It’s not throwing any codes
Try cleaning ur MAF sensor. Buy a special spray for electronic parts only and spray down your sensor and scrub with a bristled brush and repeat. Read instructions on how to use what you buy 1st!!!
OMG...... $190 for labour to change a MAF sensor?!?! You have been wholly ripped off. It is a 5 minute job, even for an absolute novice. It's one electrical plug that needs pulling off, then usually 2 jubilee clips (only a screwdriver needed). It is one of the easiest components to change on an engine. It's always right at the top of the engine, as it's part of the air intake system (near the airbox). It is absolutely criminal that any garage could charge $190 to change a MAF. It is only marginally more difficult than changing a fuse.
My car misfires. anything over half throttle it’s really bad and my engine light will start to flash and my car will smell. My car will jerk around when it’s misfiring can anybody help me?
It is unclear what the "mine trips" means. )) If you're talking about traction issues while driving your diesel car in snowy conditions? Diesel engines often have higher torque, which can cause the wheels to spin and lose traction more easily in slippery conditions. It could also be an issue with the tires, as winter tires are designed to provide better traction in snowy conditions compared to all-season or summer tires. Use appropriate tires or adjust driving habits...
My Subaru Forester XT recently stalled out on me on the highway and it started smelling like gas in the cabin when I turned the car off. Turns out that the problem was a bad mass airflow sensor harness.
This type of detailed information sir, elevates my life! 👍
💩🤖💩🤖
I have only had one go bad recently in my 99 Lincoln Town Car. I was getting a bit of a rough idle and randomly a lot of destination and part throttle. Turned out my car would randomly think it was a small plane, flying at 14,000 feet. For reference, it spends most of it time at 100 or less feet above sea level.
How I knew my mass airflow sensor was going bad. It wasn’t bad yet, but it was well on its way. When I turn the heater on that goes through the vents like to defrost my window, my SUV would start jumping, same with the air conditioner that goes through the vents The same Vince as above I got the mass airflow sensor cleaning spray that did nothing. Oh one more thing my gas mileage sucks matter fact it’s being replaced today I have a 2019 Kia Sorrento L with 138,216 miles. Yes I know a lot of miles for a newer vehicle I drive for Uber and I travel a lot. This explains my mileage. I will come back later and let you know if my issues are fixed by replacing the mass airflow sensor
Thanks for the comment! Even though the cleaning spray didn't help, it's good that you're getting the sensor replaced. I hope that resolves your issues and improves your SUV's performance. Don't forget to update us on whether the replacement solved the problem.
@@carproblemsmax4:08 4:09
your problem is a Kia , why Americans buy foreign cars is a mystery to me
@@jonesy4588 because they’re cheap and affordable ! not all of us can afford 50,000 or $100,000 or $200,000 cars and I’m not saying that to be rude at all ! please don’t take it that way, because that’s not the way I mean it. I just wanted to add that in there because it’s hard to tell in a comment if somebody’s being rude or not. so I just wanted to make sure you know that I’m absolutely not being rude whatsoever.
@@carproblemsmax
Absolutely did not fix the problem. Turns out I had a misfire and one of the gaskets was bad which was leaking oil into my ignition coil. Also getting onto spark plugs this making me have a misfire parts are on their way. Thankfully I absolutely know how to fix this. Also confirmed with check engine light, scan, because check engine light did come on.
PS turns out a 2019 Kia Sorrento doesn’t have a mass airflow sensor. Good information to know lol.
I absolutely knew nothing about cars before purchasing this vehicle, but now that the warranty is out because there’s a lot of miles on it I’m learning how to work on cars one step at a time. so thank you to everybody who has helped me along this road. It’s very interesting. I’ll tell you that much !!
Thanks for being gentle with this little old female who now knows more than her husband about cars now 😈 never thought I’d see that day coming !
replaced my alternator and after the car ran like absolute shit, was convinced it was an alternator problem and was in the process of returning it, realized the sensor bracket broke, hopefully that fixes the issue
Can this cause bad voltage ?
Have this issue. Was thinking O2 sensors but they got continuity. About to pick up a new MAF sensor and see if it fixes it. I got the same symptoms as everyone. Rough idle and RPM needle dance not always but when I come to a complete stop
So how did it go? Was it the MAF senson or something else?
What should one do if there are NO trouble codes?
Very best MAF video I’ve seen!
Very helpful thak you ror shearing
What about a service stabiltrak dummy light?
Traction control then reduces engine speed and while stopped it vibrates
My Tahoe is doing this as well. Did changing the MAF sensor fix the problem? Do you still get the stabilitrak light?
I wish you had something on "Restricted Performance" on cars. I've got an old but beautiful Jaguar S Type. Love your channel!
Could this be a reason why when I change my gear it make a sound and a backfire sound ?
That’s a pop tune my boi
My Toyota Mark 2 runs fine but when the check engine light comes on, the car loses power and it doesnt respond to the gas pedal while the engine still runs. The engine dont respond either to the gas pedal(Engine sound stays the same). A machenic diagnosed it and showed a faulty MAF Sensor.
I need help if this is the sole reason for this issue or there could be other contributing engine faults as well.
Please help a brother out.
I'll greatly appreciate a response to my comment please.
my car does the sanething. no solution yet
My truck feels like it's gonna die when I accelerate at a stop. And I don't get power
@Jessie Barber for me yes it was the MAF it was super dirty I sprayed some MAF cleaner and it did the job. A good way to tell is if you run the engine and disconnect the MAF and give it has the vehicle won't turn off but if you connect the MAF and it's dirty the car will turn off or jerk
@Jessie Barber Toyota cavalier? You mean Chevy cavalier?
Same thing happening to my Honda accord now when I turn my ac on it makes things worse & vibrates even more. I replaced a broken motor mount, 2 o2 sensors bcuz it set off the check engine light & now the cheap MAF sensor isn’t working & may need a new ac compressor. But I def notice every time I pull to a light or stop sign & pull off, it wants to die on me. All this started after hitting a median in the dark 🤦🏼♀️
i drive mine for about 10-15 mins and after that when i’m coming to a stop it takes like 3 seconds for it to go after i give it gas and when i drive it it will make some loud pops , also when i’m in idle sounds like it’s going to shut down like rpm’s kinda dancing a little bit
@@christianruelas1460yea mine sounds like it has a monster cam in it. And I have to really use my throttle when driving from a stop. I’ve had to drop my clutch countless times just to keep it from dying. I’m gonna try the MAF cleaner but I also got a fuel filter if that doesn’t work.
My 2011 GMC Sierra 1500 SLT throws on service stabilitrak & traction control lights but it only goes into limp mode (engine power reduced) when I turn on my A/C. But after watching this video I unplugged the MAF sensor with the truck running and it did not turn off so I’m guessing that could be the problem. What do you guys think? Is there some connection there?
2017 Nissan Titan... after idling for 10 or 15 minutes drove about 5 minutes to home and noticed as i was slowing to turn i drive the idle stayed at 1200 even after putting it in park and the light came on. Going to try cleaning the MAF and replacing the air filter this morning. Dont have a code reader and cant get an apt for a week.
Did it help?
@kane3825 it did. I bout a bluetooth code reader and checked readings before and after cleaning. No problems since.
unplug maf connector with engine running if var stay running its bad it stall it good cleaning wilol not help a bad sensor
It is possible when maf sensor not OK to be a higher consumption on gasoline....? Thanks
Yes. A very common symptom.
My 2002 bmw 325i act like it doesn’t wanna stop sometimes. I did a diagnostic at auto zone and it said it was this but I’m not seen the symptoms that’s stated in the video
Autozones diagnostics are shitty and cheap
Can this cause reduced engine power
Yes
Would this make the car go into reduced power mode?
Yes, a faulty MAF sensor can cause a reduced power mode in a car. If it faulty and not providing accurate readings to the ECM, it can cause the engine to receive too much or too little fuel, resulting in reduced power or even stalling.
In some cases, the ECM may activate a reduced power mode to protect the engine from damage if it detects an issue with the MAF sensor or other related components.
@@carproblemsmaxI don’t have any codes or mils but there is a rough idle in park and my long fuel trim on bank 1 show -12%
Depends on how Korean the car is.
Thank you for the detailed information. Hopefully this will help me locate & repair our vehicle with this information.
My 2020 silverado did that after I accidently touched the the negative terminal with the wrench on the positive. I was able to get around it by using one of the spare auxilery terminals on top of the battery.
You may just need a new battery.
Hi.. Thanks for the video.. I have a touareg vw 2006 model has p0102 code and tcs light came on..thevair bag light also was flashing sometimes since long time..Replaced maf sensor.. It was fine for a half hour journey.. Tcs also went away..after hslf hour tcs light came on and scanned by odb2..code getting now p0101..totally confused.. Checked air filter snd hoses everything fine..intake manifold was removed once a time replace the head cover gasket.. It is fine fitted by looking..no leaks found anywhere.. I guess while code p0102 got i was got a misfire cilynder 1 and after multiple.. Do i removed out the spark plugs outvand checked one plug was little bent its metal rode where the spark occurs..removed out all plugs and coils..cleaned all with petrol and the bent plugs adjusted spark gap's and installed back andvsame time replaced maf sensor also.. After i am gettimg p0101 code.. Do uou have any idea about it..? It spatk plugs or coils damaged due to cleaning by petrol.? Is this bad coils or plugs cause this code..? I have a sudden or lazy pick ups sometimes while driving..gear shifting also not smooth sometimes.. But when clearing codes its runs fine for a hslf hour..after Tcs is on.. Air bag is also flashing some times....i am totally confused what to do.. Kind uour help please.. I am an Indian from Kuwait..
The P0101 code indicates that there is a problem with the Mass Air Flow sensor circuit range. Even though you have replaced the MAF sensor, the problem persists. Here's what you can do:
Check the wiring and connectors to the MAF sensor for any damage or corrosion. Make sure they are securely connected.
Inspect the air intake system for any leaks or damage that may be causing incorrect readings by the MAF sensor.
Check the spark plugs and coils for any damage or wear. If the plugs are bent or damaged, it could cause misfires and affect the performance of the engine.
Check the throttle body and clean it if necessary. A dirty throttle body can cause issues with air flow and affect the MAF sensor readings.
If none of the above steps work, you may need to have a professional mechanic diagnose the problem with specialized equipment.
As for the TCS and airbag lights, these could be unrelated issues. It is recommended to have the vehicle diagnosed by a professional mechanic to determine the root cause of these problems.
We have changed bank 1 censor 2 oxygen censor twice on our 2014 Chevy traverse and we are still having the same issues and getting the same code. Our car is bucking/jerking when accelerating. Now I’m starting to think it’s the MAF censor. This is a headache lol.
If it’s a diesel it could be the fuel filter
That definitely sounds like MAF. Just changed mine out (took about 15 minutes) and it’s running great again, no more bucking, hesitant acceleration.
You ever had issues with stabiltrak?
I think mechanics is guess work all these symptoms occur when you have a ignition coil or air filter or maf sensor
When I press throttle and the engine downshifts it just stays full throttle
My Audi A4 have no engine light on but if I put the obd on it I get p2279 can you tell me where to start,it drive properly and start properly
When im starting my 2010 corolla if i start it right away it turns on then idles for 2 seconds then stalls on its own, i have to let it sit for 5 to 10 sec before starting and the throttle is electric and never responds either it doesbt accelerate or goes full throttle no matter how much gas i give it. Also my rpm is always going up and down i know the radiator fan can cause that but this happens even if the fan is off, a while ago it would have the rpm go to 1k then 250 and repeat it until it stalled and when i smack the maf sensor a couple times with a screw driver it idles fine. Im pretty sure these symptoms confirm that its the issue correct me if im wrong
Check the idle control valve.
My symptom was a check engine light and codes P0171 and P0174....Using the Toyota MAF inspection service bulletin showed the MAF was out of spec.
Did you change it and if so did light go off?
@@brittanynicole3048 yes and now all is well.
Okay great. Thanks for your response. I will check on my sensor as well.
@@brittanynicole3048 You're welcome.
I am looking for the map sensor on a 2015 GLA 250 4matic do you happen to know where that sensor is located on that vehicle or if you know where I can download a free workshop manual
My car surges from 500 rpm to a 1000 rpm when put in park and is just idling but when put in drive or reverse it idles fine and drives fine but when stopping at a stop sign or traffic light it will almost die like it's not getting enough gas and idles rough until I give it some gas to go. Could this be the MAF sensor or something else. This just started about a week ago. It's a very old Pontiac Grand Am GT with the 3.3L V-6 with only 78k miles on it. I just can't figure it out. Thank You !
The symptoms you're experiencing could be caused by a faulty idle air control valve (IAC), dirty throttle body, or a vacuum leak. The Mass Airflow (MAF) sensor could also be a potential culprit, but it's less likely to cause the issue you're describing.
@@carproblemsmax I will check that out. I checked for loose hoses and vacuum leaks but didn't find anything. I will replace the IAC valve and see if that helps. Thank you for the reply back. I really appreciate that.
@@carproblemsmaxI’m experiencing the same symptoms on my 06 bmw 750li took it to advanced auto parts and the read maf and o2 sensor
Well actually it idles rough and it drives rough and sometimes I can floor and it and nothing it’s very slow to accelerate I all most got hit
I got a rough idle even after replacing the, glow plugs, the glow module, dpf, cat, egr, next is maf senzor hope it helps
I have a ford fiesta flair ...it has got a hard-starting problem, however in order to start it ,i must quickly tap for a couple of times while im cranking😢
What's the solution guys
Would this cause my bike to Sputter feels like it’s needs gas like it’s has no gas , I replaced my coils , plugs . Injectors and pump and still doing the same , so I disconnected my MAF and it would run for a few secs but ruff I would give it gas and it would like hesitating like it didn’t have any gas then I’ll plug it back in the MAF And it would die
When I'm at idle my needle bounces a little bit. U can hear the motor kinda reving up and down. Don't know what's goin on no check engine light
Mine does the same thing when i slow to almost a complete stop. Died on me a couple of hours ago. Took 15 mins of cranking to start it. Mechanic coded it. Said it was MAS.
You probably have or had a vacuum leak
My 2007 Nissan Quest is also doing that. Car won’t accelerate when taking off from a stop. It goes into limp mode. I cleaned the maf but didn’t help. Could it be the throttle body or something else besides the maf. I’ve replaced the o2 sensors. The fuel pump couple other things. Each time it hasn’t help. I’m a new subscriber your information is excellent
Try replacing the Maf sensor.
its a nissan , just normal for those junks
Can maf cause turbocharger overboost? And go into limo mode?
Idk what you mean by limo mode but yeah if it causes "overboost" the car will go in safe mode
@@KoKoTAdamzzz - It was a typo. He meant LIMP mode.
I have a 2010 Chevy Cobalt LT and the RPM's go up and down it shows a mass Air Flow sensor circuit low frequency what does that mean?
I have just now having the same problem with the rpms going up and down. Did you find the problem?
im having this issue too, i bought a scanner and got a code that said the maf sensor harness has a weak connection. working on fixing this so not sure if it solves the issue yet
My car just one day started overreving and acceleration felt weak instantly, it idles fine but my gears feel shorter and the car is running rich
mine is doing the same thing rn. was ur maf bad?
Did you find The problem?
I have a 99 Chevy Silverado it’s turns and runs fine but when I come to a stop it sometimes turns off and I have trouble turning it on and or get it moving again what could my problem be?
ihave a 03 chevy avalanche and when ipull the maf sensor off, my engine does not die but ihave no codes ireplaced the pcm ialso traced the wires idid replace 2 ground and ialso replaced the maf sensor but nothing worked
When I start my car it is fine for a second or less then revs up a bit on its own for a second or 2, then back to normal. Shifting from Park to Reverse but before accelerating, it jumps/jerks like a nervous horse for 2 or 3 seconds then runs fine the rest of the day no matter how many times I turn it off or on or how long I drive it. I have already replaced plugs and wires and air filter. Could it be the MAF going bad? Desperately asking!
I have a 15 Yukon Denali that halts and jerks when I accelerate, most likely will be the MAF because I’m getting mine replaced today.
Do they ever answer the questions, mine is doing same and I'm kinda stuck right now. Whenever it picks reves on it's own it looses power and jerks later
@@moelets0202 so far, no I've gotten no answer. Hopefully the more comments/activity, the more notifications and they'll respond eventually.
Mine is doing the same for awhile now..I've bought a new maf and.still.does that..I changed out the plugs and still doing that..next I'll be changing out the oxygen sensors
@@southwest6720 I tried the plugs and wires, air filter, cleaned the IAC, did a gas treatment thinking since I cleaned everything on the outside I should try the inside too and it's still doing it. Haven't replaced MAF yet but never thought of oxygen sensors. Hopefully that works for you!
Car gives fuel smell in exhaust and response as given gas is not even.
Hi can i know what if my car is blowing black smoke only when in idle when i reved it. Went to wshop but no fault code . I tried to unplugged the maf sensor while car is running.. it didnt die either.. any idea what could go wrong n what should i check.. car is bmw216d f46
Hi! Black smoke coming from the exhaust when the engine is idling or revving is usually an indication of a rich air-fuel mixture, meaning that there is too much fuel being injected into the engine. This can be caused by several factors, including a malfunctioning mass airflow (MAF) sensor, a faulty fuel injector, a clogged air filter, or a problem with the engine's fuel system.
Since you've already unplugged the MAF sensor while the engine was running and the car didn't stall, it's possible that the sensor is not working properly. However, it's important to note that unplugging the MAF sensor can also cause the engine to run rich, which could result in black smoke.
Hope this help.
When plugged in, theres no fault code on anything.. this makes it difficult for wshop to even detect..
Hey buddy. Any update on your issue? I have the similar issue right now. Mech says my turbo needs recon. When I unplug the the sensor smoking stops, car does feel low on power either way but with black smoke plugged in. Thanks
you missed one important thing.. many German cars running with a bad MAF, can cause a engine to stall and die.. few seconds after
3:03 mentions stalling. should have been its own section tho
you missed the most important thing buy American cars the job you save may be your own
@@jonesy4588 - What a BS statement. LOL 🙂
Avoiding American cars, as best as possible for a few decades now. Not regreting a single minute. ;-)
Hi there,
I have a problem with my Hyundai i10 4 cylinder petrol engine, it is 2009 model.
The issue iam having is when Iam driving the car, I release the accelarator and rpm will go down to 1000 when I give acceleration again there will be a slight missing. This mostly happens in second gear.
Cleaning the spark plug/replacing seems to fix the problem for some days.
I have corsa Vauxhall and cuts off while I’m driving ,when I move MAF sensor it work normal?what should I do thanks
A short in the wiring into the plug bro.
I have a 12 Buick regal gs and I just tried disconnecting the maf sensor to see if the car will turn off, which I’ve heard is a symptom that it is not working correctly, so I cleaned the maf sensor with the spray, and I connected it back up started the car and the cooling fans came on.I also have codes p2271 and p0420, I’ve replaced the downstream sensor, done fuel treatments with b12 to try and clean the cat, and it’s now starting to get bad, with low power and potentially fuel economy
MAF Sensor: Try using a specialized cleaner to thoroughly clean the MAF sensor. If it still acts up, consider replacing it.
Trouble Codes: Check both the upstream and downstream oxygen sensors. A faulty sensor can mess with fuel efficiency and performance. For the catalytic converter issue (P0420), if cleaning didn't help, get a pro inspection or maybe replace it.
Fuel System: Replace the fuel filter if it's been a while. A clogged filter can hurt performance. Also, ensure the fuel injectors are clean and working right. Consider using a cleaner or getting professional cleaning if needed.
Could this also cause overdrive to not kick in?
Yes, a bad MAF sensor can cause issues with the transmission and prevent overdrive from kicking in. If the MAF sensor is faulty, it can send incorrect signals to the ECM, which may result in a delayed or harsh shift, or prevent the transmission from shifting into overdrive.
I have changed the maf/and the map sensor and it’s still says it’s bad..I have also replaced the throttle body and alternator and plugs and coils and my 2014 Chevy traverse keeps going in reduced engine mode/service stabilitrack and traction control off. Any ideas this is driving me crazy for 2 months I also replaced the fuse box under the hood.
Maybe a malfunctioning PCM ECM ?
I got question here. My car really hesitate when i accelerate for overtaking but running well if normal driving. I find that if removed mag sensor connector my car hesitation gone. But engine check will appear and car bogging while in idle. Is this my maf sensor faulty?
Yup... so is your O2 sensor and your ETC sensor! 😨
I have the same problem, did you replace the mass sensor? how is it now?
Can it fail instantly or does it give signs before failing
Should take some time before it fails on you completely but fix it as soon as possible
it can fail instantly as well
Thank you very much. Didn't know what it was called. ❤❤❤
O1 pontiac grand am gt it hesitates going down the road until i step on it coyld this be the maf?
I have problem with engine light and my car goes to limp mode. My error is P1102. I tried to disconnect maf sensor and car works fine. I did not notice nothing special. Well check engine appera again because maf was not connected but car was not went into limp mode.
The tester showing 4.4g/s when ignition is off aroun 7g turn on, 15g with 2000rpm and 27-30g with 3000rpm. Do you think is faulty sensor?
I own Focus 2016 1.5tdci
Based on the information you provided, it is possible that the Mass Airflow (MAF) sensor is faulty and causing the P1102 error code and the car going into limp mode. The fact that disconnecting the MAF sensor made the car work fine, albeit with the check engine light on, suggests that the sensor is likely causing the problem.
The readings you mentioned from the tester also suggest that the MAF sensor is not functioning properly. The readings you provided show that the sensor is not providing accurate data, which could be causing the ECM to make incorrect fuel and air adjustments, leading to the car going into limp mode.
Yes, I think it's a faulty sensor :)
@@carproblemsmax I tried replace maf but error remain the same. There is no sign of air leaks and turbo seems to work fine. Can be a bad air flap?
I just installed a new MAF on my 08 Tahoe and I can unplug it and my vehicle stays running. Does that mean the new sensor is bad? Or will a vehicle still run with it unplugged?
Mine was still running.
@@dudeimdev6320yes it will run without
Yeah, If I can find the right sensor on a VW 2016 jetta se.
❤thanks
hello there! i have the 2015 verso 1.6 diesel and the check engine light comes on with a p00bd fault code which refers to the mass air filter. i've done everything from changing the maf sensor to cleaning the air intake manifold but the faults pops up again and again. my electrician has inspected it twice and sais there is no wiring problem. any idea what it can be???
Hi there, I have the same vehicle and I have just got an OBD2 and this code has came up, did you manage to fix the problem please ?
What if your car shuts off and cant idle?
Sound like a fuel issue boss
Intercooler leak can give MAF sensor error code as well.
What are the symptoms please, my car has a rough idle on start and eventually turns off if I disconnect the maf sensor it no longer occurs but very underpowered and slow
Car runs and idle fine up to 30 mph but will not accelerate. Floor the accelerator and it speeds up slowly down hill or motorway on ramp I used a cheap scan tool and it said code error was MAF but that was because it wasn't getting cold air from the intercooler. MAF needs to be plugged in or engine does not know fuel mixture for air going in. You can clean MAF sensors but ONLY with MAF cleaner and be gentle, don't touch it. Sounds like the MAF is dirty or failed. @@rubik2379
Rubik did you figure it out
@@rcklz2833 Yes I did it was the inter cooler which had a crack in it as it was bowed. It took me 5 minutes to find it. My wife told garage their master tech was crap and I should do his job for him.
I had a o2 sensor code pop up, the code went away when i unplugged my battery. My car barely and i mean barely wants to move,i have to touch the gas like a feather and the car moves so slow i have absolutely no power i have to slow roll and cant climb any hills and i can barely reach 40mph. When i push the gas to hard the car is just super loud and will not mive at all unless i feather press the gas. Any ideas??
I had that problem last week my car was barely going anywhere and was shaking a lot I changed and cleaned a lot of stuff hopefully one of these helps, I changed my motor mounts (car was still shacking bad), then cleaned my maf sensor with new air filter( it road a little better but wasn’t driving correctly still), then I changed my transmission fluid(this didn’t do anything far as what I felt) , then I bought some iridium spark plugs and it stopped the car shaking and the car ran a lot better so I basically did all that just for spark plugs being bad
150 dollars of labor is wild to change a maf sensor (ps do it urself guys its not that hard )
My check engine light didn't lumiate , but went in to limp mode
Did you fix this?
@Amahyze777 yes, it's the stpd new throttle body with spacer sucking too much air
My car kinda like stops for a bit and then goes again I got a 435i bmw it happens when I’m breaking or just accerlerating
My bmw 335i 2008 show me check engine light, and show me the fault is P0113, P2091,P0238 i will go to smog check shop , guys told me you remove the check engine light then i check the smog test
I have 2006 300 c my car used to go into limp mode last year and even turned off while driving a couple times. Recently i had the fuel pump replaced and have been having problems since. Sometimes ill run the car for 45 minutes come home and let it sit for anorher 45 come out and try it and it wont start. I recently had the throttle body and the cam and crank chnaged cause of this but still the same. My mechanic told me he got a maf code recently and today got a egr position code. Do you think it cohld be the maf ?
It is possible that a faulty MAF sensor could be causing the issues with your car.
Additionally, the EGR system can also cause drivability issues if it is not functioning properly.
Based on the codes your mechanic has received, it is possible that either of these components could be contributing to the problems you are experiencing.
@car PROblems im gonna try the egr because ive heard the egr can activate the maf code so im wondering if changing or cleaning it will make a difference
Maybe bad Catalytic Converters?
I changed my maf sensor and the engine stays running after I unplugged the plug. What does that mean 🧐
All cars should still run when the MAF is unplugged. When the MAF is unplugged, the ECU reverts to using standard look-up tables for typical airflow rates, at given temperatures and speeds. Your car will run a lot less inefficiently without the MAP sensor, and MPG can suffer by up to 20%... but the car will still run. Some small budget cars (like the 2001 Renault Clio 1.2 I had years ago) do not even have or use a MAF sensor. They use Manifold air pressure (through a MAP - not to be confused with MAF - sensor) along with look-up tables.
How do I get airflow sensor for Subaru legacy bf3 spire the car reduce the power and to much fuel
Ebay
So I unplugged the Maf sensor on my 3800 engine. You can actually tell a difference. It wouldn’t hardly stay running but then I plugged it in and started the car it runs great. I’m wanting to know if it could half fail? I’ve been troubleshooting my car for 2 weeks trying to find out why it has no acceleration it runs smooth but no power? Help please!! It’s not throwing any codes
Try cleaning ur MAF sensor. Buy a special spray for electronic parts only and spray down your sensor and scrub with a bristled brush and repeat. Read instructions on how to use what you buy 1st!!!
Just got charged $380 to swap one on a 2002 toyota avalon, he charged me $190 for a mq6203 air mass sensor and $190 for labor
change your mechanic that's foul smh
That part at advance auto parts is 102.00 you got ripped off
@@kimsmith5083 it was a hitachi brand bought from some place that sells to dealerships and mechanics
what do you have a junk yard ?
OMG...... $190 for labour to change a MAF sensor?!?! You have been wholly ripped off. It is a 5 minute job, even for an absolute novice. It's one electrical plug that needs pulling off, then usually 2 jubilee clips (only a screwdriver needed). It is one of the easiest components to change on an engine. It's always right at the top of the engine, as it's part of the air intake system (near the airbox). It is absolutely criminal that any garage could charge $190 to change a MAF. It is only marginally more difficult than changing a fuse.
My car misfires. anything over half throttle it’s really bad and my engine light will start to flash and my car will smell. My car will jerk around when it’s misfiring can anybody help me?
It sounds to me like cylinder number 3 is misfiring. Have you done a tune up on it?
@@89rockstar I checked the codes and it was 2 and 4 I replaced my coil packs and spark plugs and it’s fixed now
@@89rockstarmine is cylinder 3 when I give it gas. What do u think it could be ?
The little sensor is pricey. Most brands over $100 to $200
Mine trips when I drive my diesel when its snowing. Why is this?
It is unclear what the "mine trips" means. )) If you're talking about traction issues while driving your diesel car in snowy conditions? Diesel engines often have higher torque, which can cause the wheels to spin and lose traction more easily in slippery conditions. It could also be an issue with the tires, as winter tires are designed to provide better traction in snowy conditions compared to all-season or summer tires. Use appropriate tires or adjust driving habits...
🙌
Would this make a car smell like gas inside ?
No that’s the fuel filter
My Subaru Forester XT recently stalled out on me on the highway and it started smelling like gas in the cabin when I turned the car off. Turns out that the problem was a bad mass airflow sensor harness.
Do it yourself and it will be $0 Trust me it's very easy to fix that
You can’t even say mass air flow Paul hahaha
My car randomly idles high,but goes back to normal if i blip the throttle