My svt is also doing the exact same thing. While driving, hold the clutch to the floor and the rpms rise for about 5 secs, then slowly fall. It makes it more difficult to stop as the engine is still revving while you are braking, and the revs will hang at about 1500 until the car stops completely! I have already performed the TH fix, replaced the IAC, and have cleaned the throttle body. I am at a loss. I will search for a vacuum leak..but other than that, I have no clue what to do. With gas prices like they are, this is driving me crazy. PLEASE HELP!!!
