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Rough Idle


May 23, 2011
Reaction score
City, State
West Virginia
Year, Model & Trim Level
'92 Explorer XLT 4x4
So back in May my car was running lean and idling super low and dying. The problem was the MAF. So i replaced it and everything was fine. Now my car is running rough again. and when at about 65-70 mph the car looses power for a sec then powers on then looses it again. it's like someone is tugging repeatedly on the back of the car preventing it from go.

I have pulled many codes. the first time i did it i got 565 KOEO and 157 & 158 CE. so the purge solenoid and both high and low voltage. then i started getting 173 rich. Now today i did more testing and hunting for problems and got a KOEO of 159 MAF out of range and the same 157 & 158 CE but this time the 565 somehow wasn't thrown. And i noticed that if i unplug the MAF everything runs "fine". could my new MAF be malfunctioning or is that pretty rare.

Any help or suggestions would be greatly appreciated.