I just put a 3.3 in my 96 pathfinder it is a used engine but low miles.The problem is as soon as i got it started it jumped right up to 6 grand at idle and i dont see anything wrong the butterfly is hitting the stop just fine.I am not sure where to start trouble shooting it any and all suggestions would be very helpfull i have double and triple checked all electrical and vac connections everything looks fine. Thanks Pete