On my way home this evening, I stomped on it a little, to get out from behind an annoyingly slow car, and when I let off, the car was idling faster than normal. It continued to do so all the way home (about 15 minutes). I parked it, and popped the hood, expecting the fast idle cam to be engaged or something like that. It wasn't. I shut it off, and it dieseled for a couple seconds. Turned it back on, and it was still idling fast. The fast idle cam is not engaged, or sticking or anything like that. Bliping the throttle does nothing. The throttle cable was not stuck, nor was anything else, that I noticed. What could cause a fully warmed engine to start idling much faster than normal while driving, and then not kick down? Just another problem...