Quote:
Originally Posted by A1971Blazer
check all the vacuum lines for cracking...high idle is usually a vacuum leak....
also as someone stated check the coolant temp sensor AND the connector....
but usually if either one is bad you will get a rich condition in addition to a high idle...if the pcm sees a cold engine condition it will dump in extra fuel....
also check the IAC for proper operation....this controls the amount of air going in at idle...
and check the TPS voltage at idle...you may need to tweak it a little.
read here... http://www.gmtuners.com/tech/TPS_IAC.htm |
Good stuff, I’ll order the coolant sensor, they are cheap.
Good reading on the link, thanks.