Thread: Engine choking/stalling when warmed up

Engine died on me a couple of weeks ago on the way home. Pulled off and it started right up. Noticed that it was accelerating pretty rough/hesitating like it was wheezing.

Replaced the air filter (it needed it) and the IAC valve, didn't fix anything.

Finally got it to throw a P0102 code Low Mass Air Flow, so went out and got some MAF cleaner - didn't do anything to fix the problem.

It runs perfectly for the first 15 minutes, but after it warms up it starts choking and eventually dies. RPMS start dropping and it opens up to compensate, so revs up a little, then goes back to normal. Chokes about once every 30 seconds at first, until it won't even run.


Should I just replace the MAF sensor or might something else be up? It's weird that it shows only when the engine is warm.

check the wires to the maf for damage, aka cracks or missing insulation, if you see bare wire, you need a new pig tail.

or the maf is dead and you need a new one

also check fuse # 21 iirc. thats the fuse for the maf and the o2 sensor.

http://www.obd-codes.com/p0102

Thanks for the responses. I've got a wire probe kit coming in the mail that I can use to test the MAF (among other electrical issues I'm having).

Reptile, how much you selling one for?

Bill's maf test:
Start the car and let it warm up.
Pop hood and tap your finger on the top of the maf.
If there's a bad connection inside the sensor (common), it'll act up right there in the driveway.

I replaced the MAF and everything seems to be running fine now. Taken it out a couple times and no stalling, idle is a bit smoother.

I actually tried testing it that way, by tapping on it, and that does work! Stalled every time once it was warmed up.