My car has been has had a rough idle for a while now, I have replaced the O2 upstream sensor & the IAC. checked the plugs, wires didn't see anything out of the ordinary. The car runs fine but idles rough, before I changed out the above parts I had it scoped & they said that O2 sensor was bad so I changed it.
Car was also running lean & had a miss? I can't feel the car missing so I don't know where that comes from. I did have a wire from the fuel pump that was grounding that I had fixed last week.
motor is a 3.8 with 171K miles
thanks in advance for any help
Jim