White93z34 Posted March 28, 2006 Report Share Posted March 28, 2006 ever sine we put in the new engine it idles just a little too high (200-300rpm) it woulden't be such a large deal except it keeps tripping the SES light. we replaced the IAC, and i believe the vaccum lines are all good and tight, i'll have him double check them however. what else would cause cause this? the Pcm also has the factory idle settings in it, so that rules the computer out. car: 1997 GTP engine: 98' L67, 25,000 trans: 4t65eHD Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted March 28, 2006 Report Share Posted March 28, 2006 Well if everything is fine, I would scan the ECM. Quote Link to comment Share on other sites More sharing options...
White93z34 Posted March 28, 2006 Author Report Share Posted March 28, 2006 we have done that, alot. we keep getting the "idle too high" code, its number i forget at the moment. but it keeps pulling that. and it is idleing a little too high, but not much as in 200-300rpm. i'd like to know why Quote Link to comment Share on other sites More sharing options...
99RegalGS Posted March 28, 2006 Report Share Posted March 28, 2006 Pull the air filter ducting off the TB and put your hand over the end of the TB. Does the idle go down? if not, it's a vacuum leak somewere and if so it has something to do with the TB assembly or the PCM. Also, what are the IAC counts? Quote Link to comment Share on other sites More sharing options...
White93z34 Posted March 30, 2006 Author Report Share Posted March 30, 2006 if i do that the car would stall. bump. Quote Link to comment Share on other sites More sharing options...
99RegalGS Posted March 30, 2006 Report Share Posted March 30, 2006 Also, what are the IAC counts? Alright, soooo get some propane and put that around all the gaskets see if that can find the problem. Also, how is the PCV system? Quote Link to comment Share on other sites More sharing options...
White93z34 Posted April 4, 2006 Author Report Share Posted April 4, 2006 well nevermind, we got it fixed, it was a out of adjustment cruise cable. car is happy. Quote Link to comment Share on other sites More sharing options...
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