I posed a thread a few days ago about when i hydrolocked my 4.0 HO in 4 feet of water, and how ever since then it has ran a a REALLY high idol. and i just ran the beast to the store and back and when i stoped at a stop sign on my way home... it was running perfect!!! i was SHOCKED!
but then after i got it home. shut it down, and restarted it the high idol was back... could it be the throttel control sensor??