My 2001 Dakota 4.7 4wd was bucking a little bit and the check engine light came on i checked the computer with an ODB tester and came back with a po320 code any ideas on what it can be.

 

no crank reference signal registered by the pcm. probably your crank position sensor.

 

Have you asked your wife?

 

I have a 2002 Ram 1500 with a 4.7. I change the crankshaft sensor, the truck still ran rough, changed the spark plugs and notice that 3 of the coils had separated. Changed 4 of the coils, the truck ran good until it got warm. then it stopped, and would not start. Any suggestions.