Originally Posted by MoparNut87

Check grounds all good and even replaced tenisoners for the timing chain. Still have the p1391.

Originally Posted by RJ186

I know this is 3yrs old but did you ever fix this???

Originally Posted by HeyYou

Did you replace your cam sensor? Was it a genuine mopar part?

Originally Posted by HeyYou

Time to go over the wiring thoroughly.

Originally Posted by MoparNut87

I am completely baffled by this at the moment, rebuilt the 4.7l engine in my fiancé's Durango after much fighting back and forth with error codes, a new pcm, new crankshaft, all new sensors, a new wiring harness, new battery, new coil packs, spark plugs, new timing chain/ guides/ tenisoners, and re-timing it about 30 times. I am at my wits end. She just will not start, and the only error code that is showing up now is the p1391. Anyone have any idea why this might be happening? Got her to start a few times with starting fluid, very eratic/rough idle, but will not stay running with out feathering the throttle. Please help!

Originally Posted by daddydaff

Originally Posted by MoparNut87

I am getting good fuel pressure, can it still be the fuel filter?

Originally Posted by MoparNut87

I am completely baffled by this at the moment, rebuilt the 4.7l engine in my fiancé's Durango after much fighting back and forth with error codes, a new pcm, new crankshaft, all new sensors, a new wiring harness, new battery, new coil packs, spark plugs, new timing chain/ guides/ tenisoners, and re-timing it about 30 times. I am at my wits end. She just will not start, and the only error code that is showing up now is the p1391. Anyone have any idea why this might be happening? Got her to start a few times with starting fluid, very eratic/rough idle, but will not stay running with out feathering the throttle. Please help!

Originally Posted by Themechanic420

I know depending on years the reluctor wheel changes and the teeth count are widely different throws off the crank sensor and will just crank won't start.