Quote:
Originally Posted by Victor300E
I disconnected maf sensor and duty cycle went to steady 59.7%. When maf is connected cycle goes to 50% and going down to 3-12%. I have O2 sensor on order. It will not hurt the car to have new O2 sensor since it's old anyway.
I did have a stalling problem before and I bought a used maf from good running car with 125k. I know the guy and it was his personal car he parted out. After maf replacement my car never stalled once. Maybe his maf was not good?
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I think the 'test' showed that the MAF is bad since it goes to the 10% area unless it's contaminated and that contamination can't be removed.
Is it a "hot-film" type vs "hot-wire"?? In trying to clean them, the H/W MAF clean up better than the H/F MAF. My tech has tried a number of them with no success.
Quote:
Originally Posted by Victor300E
Do I measure cycle correctly? Red positive lead from multimeter to pin3 and black ground lead to ground? If I reverse leads then I get 40% maf code.
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Red on pin 3; Black on Pin 2.