s2mangas2

I have read quite a lot of threads about the air flow meter (MAF) causing problems with loss of power. these symptoms are exactly what i have on my W202 C200 2000 model. Over a period of a few months I noticed a gradual loss of power when accelerating to the point that when i put my foot down....nothing happens. I also noticed that when the car struggles to have enough revs to change up gear I could rectify this problem by stopping, turning the engine off and restarting. Sometimes I can go for an hour with no problem other times its every 5 minutes. It sounds very much like the MAF to me but i also hear that disconnecting the MAF should make the car run better. I have disconnected that MAF but the issue is about the same with or without it disconnected.
I want to order a new MAF but am reluctant to fork out £150 (Bosch) if it may not be the MAF.
Can anyone confirm my symptons are indeed the MAF and nothing else?
Thanks

ptcruiser

It could be the Y32 (Do a search) or vacuum leak associated with the Y32

Dino X

Yup! Sounds like a MAF in trouble all right. There two on my list that goes hand in hand, the MAF and the Throttle Assembly. You can conduct some test first if you don’t have or find scan tools being vague sometimes, like checking on the wiring harness of those two if it is fried or not (very common problem). Then back probed or peel off a small part of the wirings by checking the standard voltages or resistance using a multitesters or voltmeter.