Ok, recently I swapped a motor from a 99 durango into my 98 limited jgc. i am having a few problems with it now. new plugs, not gapped, my fault, will be fixed this wknd.

1. back fire during various stages of driving and rough driving from 2-8 mph and 50-60/62mph. shakes fairly decent at the latter part.
2. after turning off, the sideview mirrors go back to the position they were in before i put them where i wanted them.
3.cel light blinks 5 times, then stays constant until blinking again after a few minutes.
4. 4wd switch will not change at all when switched into neutral or 4lo.
i was thinking of replacing, wires, rotor cap, and tps or cps maybe.

 

Nothing?