*****update***** We have checked timing, grounds, sensors, everything suggested. New idle control valve, and reset computer. Truck turns over- wont start. Seems like our only option is to replace the PCM? any thoughts?
I put a used engine in my 03 dodge ram 1500 (3.7). Before putting it in I changed the oil pick up tube, oil pump, belts and all the seals. It started up right away, drove it down the rode and it ran fine for about a mile then died. Towed it back home and now it is backfiring and will not stay running. Any ideas what the problem could be? it sounds like the timing is off but I'm not sure if there are other problems that should be checked out first?