had a problem with a 1997, 2.5 idling down. sometimes would seem to get backed up with fuel at a stop. even driving down road, push in clutch or let off gas. i put in a new IAC. does not get backed up and want to stall anymore, however still idles high and on starting revs high for a few seconds before coming down. (have no tach) have a napa cps in it until oem one comes in. would that be the cause? mechanic did a scan. told me there was CPS problem. put another so called, good, NAPA one in, 3rd one. pissin me off. haha

 

Carefully go through all the vacuum lines and see if any are leaking. Also check that they are routed properly. Listen around the intake manifold for vacuum leaks. The issue with the CPS may not even be an issue at all if vacuum leaks are the problem.

 

i did look at them and no noises. i'll get in there with some carb cleaner and spray it around them tomorrow. thanks.