bumpstop325 0 Report post Posted March 18, 2006 Problem: engine idle's at 5,000rpm as soon as you turn on the key and it will just maintain that engine speed untill you turn it off. Tried: disconnected the AFM, TPS, the battery and the idle air bypass. Still the engine manages to run at 4,000rpm. The throttle cables are in there normal RESTING position throughout that starting and running of the engine. There is no tension on the crusie control cable. The TB is in the closed position. The AFM flab is not bindind and is moving freely. Was at first thinking it was the TPS stuck at a position that would relate to full throttle, so i disconnected it and it still ran. There dosnt seen to be any/little black smoke from unburnt fuel. I have consulted the bently manual but to no help. Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted March 18, 2006 IdleControlValve stuck open? if the TB closed and it idling that high, thats pretty much the only way air can get into the engine. unless you have a vacuum leak somewhere around TB/Intake manifold Quote Share this post Link to post Share on other sites
bumpstop325 0 Report post Posted March 18, 2006 even when the idle air vlave has been disconnected it still runs. but surely having that stuck open, wont cause it to rev that high, Quote Share this post Link to post Share on other sites
