Well been having idle problems lately as it seems my car always wants to idle up, I tried disconnecting the TPS while it was idling fast and it did idle down one notch. I believe the computer keeps thinking the engine is cold and goes into fast idle. It will let me kick it down all the way down(like 3 steps) but then it just comes back. Is there any reason it would do this, would it have something to do with me putting an temp guage in? I was told that there is an alternate sensor for the puter but was I lied to? Any help is appreciated.