Auto Repair & Maintenance : How to Know if a Mass Air Flow Sensor Is Bad

[crewreaper1]

i have a 99 mustang with the 3.8 motor in it and i have the obd2 code coming up po122 for the tps sensor...is there some way to adjust it i put the new one in and code keep's coming up....

[MostarBrato]

so if its broken then it is bad? right??

[number1STEELERBOYZ]

I have a 1990 Ford Aerostar 4.0L V6 and my engine is running very bad and lean, but when I unplug the mass air flow sensor, it runs great. So I got a new mass air flow sensor, but it still is running very bad. What do you think is wrong?

[10MickeyMouse]

@number1STEELERBOYZ

Vacuum hoses are rotten. There are a bunch of them. Leaking vacuum hoses cause unmetered air flow. The reason it runs better when the MAF is unplugged is that it's running a default value for MAF, calculated using RPM, TPS and HO2S inputs.

Take some time tracking ALL of the vacuum hoses, you'll find the problem.

[number1STEELERBOYZ]

@10MickeyMouse OK, thank you! I'll start looking!

[snoffuful]

my car revs up to 5k rpm and climbing by itself i turn it off and turn it back up and still revs up pretty high by itself could this be my maf sensor? i have a nissan 92 240sx ka24de. i also hit the gas but wont do anything.

[dinodance0204]

I dont think these inappropriate comments are necessary... this is a helpful video about cars, talking about sex just seems irrelevant.

[naailah2551]

can a bad maf sensor cause your vechical to shut down while driving or parked i have a 97 bonneville and autozone did a diagnostic and the maf sensor came back code P0102 can this be the real problem? thanks

[equity006]

How about a sign of "out of breathe?"

[fastvpbt1]

did he have sex with a a female or male or on is own????lol

[hp11208]

@president how u know that were u having sex with him lol

[MrJThao]

duralast gold battery!

[DMM9786]

i have a 96 tahoe and changed the mass air sensor because the truck kept shutting off at start up and code was for maf. after i installed new maf it ran great for about 45min then went back to shutting off and rough idle . i went online and someone said to check egn1 fuse> it was blown then i replaced it> it last for 30min then blew again it keeps blowing that fuse what do i do??? any ideas?? thank you!!

[soldierboy2525]

can a bad air flow sensor cause a low idle? my bmw is has a low idle problem and I disconnected the plug to the air flow sensor and it ran much better but im sure i cant leave it like this should I get a new sensor ?

[raikkonen85]

@soldierboy2525 if it runs fine after taking off the MAF then yes this indicates a bad MAF. repair, clean or replace.

[PresidentOfTheBlack]

hes breathing like he came back from having sex.

[jeffrockr]

my mass air flow gone out of its cylicone tube i think because there was too much pressure... and the car runs and the mass air flow seems to stay in its place when i dont completely put it in the cylicone tube... can somebodyexplain me how i can put it all in without making it pop out its tube

[4thsubaru]

this was very helpfull thanks

[MakeItAwkward]

thanks.... why were you mounting that car tho lol

[dwharris757]

thanks for the help

[stavrique]

EXCELLENT!!!!

[Getitrightstupid]

Tried that and it worked! :)

[newmanto03]

dude your car was probably at 2 rpms while the car was turned on and without moving the throttle