OK guys I have a 95RS that seems to have developed a intermitted lopey idle. I was driving it the other day and about after an hour of driving I came to a stop light and it was idling like the timing was off or it had a big cam. So I drove to where I was going shut off the car and when I left (about 15 minutes later) the car idled perfect. Then about another 20 minutes later it went back to lumpy idle. Now the ECU in this car is not the orginal and I bought it used about six months ago. I also have no CEL's. Do you guys think the ECU could be going bad again? I know I have read somewhere in here that 95's tend to go bad often. And yes I already did lots of searches.

What have you all checked out on the car because of searching?

welcome to my hell, i still cant pin point my idle issus.. gl and search theres ta least 10 things ul have to check b4 u can point at the ecu

I have a new IAC,EGR,Crank and Cam sensors new coil,plugs, fresh motor and newer temp sensor and new O2. Also when the idle is acting funny all my lights will pulsate with the motor at idle. Just for a note I drove the car today and it started up with the funny idle I drove it to a buddys house when I left it still was not idling correct and about half way home it started idling perfect again.

Ok I just went and unplugged battery and behold I got P505 code now I searched and everyone says its the IAC or harness. But my IAC is new and my harness seems to be in good shape. I did find one post about the TB being slightly off center. What the hell are they talking about?





I prepare to take out the new IAC...take of the TB...and for some reason i look closer at the tb.....and DOH!!! the throtle plate was ever so slightly off center...since i would hurry every time i would not do that step .....well i got my torx and ..tada! fixed....