Quote Originally Posted by flame View Post
Just went back and read your original post. If you are drive by wire you don't have an IAC motor. The pcm just opens the throttle blade. Seeing 19% when you are off the pedal is normal. Try putting the stock tune back in it. High idle could be caused by a vacuum leak what are your fuel trims like?
Fuel trims look good and I sprayed every inch of motor when running high idle with no affect . I will reload factory tune, BUT I will say this motor has had the same tune in it for 2 years and this is something that developed. When running normal my blade is 3-4% , 19% would seem way too much for an idle ?? And my HIGH idle occurs I see the 19% , when it's running fine which is MOST of the time it's 3-4%