my car does this pretty bad too, but what i find strangest about it all is when it likes to do it most. If I take my car out of gear when I'm cruising, like before I break and come to a stoplight, then the idle will hang up there around 12-1300 until I come to a complete stop, then I wait 3 or 4 seconds and it comes down. I haven't really tried to fix it or do anything about it yet. I figured that I would just wait until i get it tuned and see what that does to it. Good to see that I'm not the only one experiencing this.
Sapphire Blue '95 GT, 5 speed
295 RWHP 302 RWTQ
3.73 gears, Magnaflow Catback, JBA Headers, X-Pipe, Shifter, Pulleys, Springs, Clutch, 75mm MAF, 30# Injectors, 75mm TB, TW Heads, Systemax II Intake, AFM B-31 Cam, 1.6 Rockers, AFPR, Timing Chain, Elbow Adapter, 255 lph Fuel Pump, AFM PMS, Mallory Ignition, Aluminum DS
'01 GT Wheels, Clear Sidemarkers, Bullitt Pedals, White Faces, Billet Grill, Cobra R Hood
Brakes, Tranny, 347 , Suspension