Thanks for taking the time to view this. I have a 1990 Ford F250, 5.8 gas engine. It will not ide. It starts up fine but I have to feather the gas to keep it running. It bounces from roughly 200 RPM to 900 RPM, back and forth. I have replaced the IAC valve with a new one and got no change. I also removed the vacuum line to the EGR valve still nothing changed. Ive unpluged the EGR valve and didnt get anything to change. I removed the complete EGR valve and everything looked ok. I was able to press the pin and the valve moved ok. It did not seem like it was stuck. I tried running it without the EGR valve pluged in and it again did the exact same thing.
Any sugestions would be greatly appricated.
have the same problem?
Sunday, May 2nd, 2010 AT 6:10 PM