Engine Performance problem
1993 Ford Tempo 4 cyl Two Wheel Drive Automatic 60000 miles
I have a 93 Ford Tempo and it is idling at 2500 rpm. I have checked the TPS and it is.9v at idle, I used a three lead pot and set the voltage to.4v and that didn't help.
I removed the IAC and watched it move up and down, seems ok. I even replaced it with a unit from AutoZone and it made no difference. I can unplug the IAC and there is no affect. I coonect a tester to the IAC and was able to open it and close it. If I squeeze the hose that goes to the IAC value I can bring the idle back to normal. I don't hear any other vaccum leaks. I'm wondering if I should have cleared the PCM when I tried the new IAC value from Autozone, I didn't do this step. Any ideas.
Saturday, September 26th, 2009 AT 8:49 PM