my cars idle is going from 2grand to 1grand, and over and over again. The car throws an iac system code. I changed the iac and the same thing happened. Sometimes the change from 2000 to 1000 is fast and sometimes its slow. What else could cuz this problem thats part of the iac system?????

 

well...my SC s2k sometime does that with crazy idle..

but, it does not happen all the time..just 1 out of 100...

so..i kinda ignored..


jay

 

what does the code say exactly? iac system ..what? does it say no signal from iac?

 

it said iac system not to spec

 

I Wish i knew more about s2000's man. but like i said before, based on past experiences, check out the intake manifold gasket, maybe the fuel pressure regulator too.

 

Would your pressure sensor have anything to do with this?
Maybe the pressure sensor is faulty messing up your stock PCM.
Although I'm not sure how the Greddy pressure is wired into the PCM circuit as I've never installed one. Good guess I guess.

 

What was the code P0...? I can look up a dianostic table if you can get the actual code.

 

man i dn't even remember

i did disconnect the battery a couple of times about 4 days before it happened, would i have to do the idle learn procedure???

 

The way I see it you said it was acting up then you replaced the IAC but then it happend again. I think it is something else that has gone wrong and it is making your IAC act up. I will see if I can find something without a code.

 

thanx alot man your help is greatly appreciated