8 Common Bad Mass Air Flow Sensor Symptoms - Faulty MAF signs

Sadly, it occasionally happens that the MAF sensor wears out or malfunctions. In this video,we will discuss the signs of a bad MAF sensor, where to find it, and how much a replacement will cost.

Timecode:
00:00:00 - Short intro
00:00:37 - Check Engine Light Illuminates
00:01:20 - Slow Acceleration
00:01:39 - Hesitation, rough or jerky acceleration
00:02:03 - Hard Starting Condition
00:02:22 - Black Smoke From Exhaust Pipe
00:02:52 - Rough Idle
00:03:09 - Misfires
00:03:36 - Changed Fuel Consumption
00:03:56 - MAF Sensor Location
00:04:21 - Diagnosing a Failing Mass Air Flow Sensor
00:05:15 - Replacement Cost

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[Nothingtoya]

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.

[tredfxman]

This type of detailed information sir, elevates my life! 👍

[sonjakeesee]

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

[estevanperezz]

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

[NRB_]

What about a service stabiltrak dummy light?
Traction control then reduces engine speed and while stopped it vibrates

[thebigdogsmac]

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

[veloxversutusvigilans]

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.

[gooimanilow]

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

[davidyj]

What should one do if there are NO trouble codes?

[chikukaonga]

I think mechanics is guess work all these symptoms occur when you have a ignition coil or air filter or maf sensor

[cabotom]

I wish you had something on "Restricted Performance" on cars. I've got an old but beautiful Jaguar S Type. Love your channel!

[davidluevano]

My truck feels like it's gonna die when I accelerate at a stop. And I don't get power

[AndreE]

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?

[UKQx]

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

[jw]

Would this make the car go into reduced power mode?

[twomediapng]

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.

[linnellbrooks]

Could this be a reason why when I change my gear it make a sound and a backfire sound ?

[karanmadan]

Car gives fuel smell in exhaust and response as given gas is not even.

[adnanabdurrahman]

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

[mrsdreamweaver]

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.