I have a code that wont go away, P0336 the crank position sensor, I have replaced it with a cummins sensor. The issue still stayed, inspected the tone ring everything checks out...I clear the code and it comes back as soon as I start the truck. When starting the truck sometimes it will fire right up other times it just doesn't wanna start. While driving it bucks. Everything is intermittent.
Any ideas what I'm not looking at? I got to get this Fixed!!!!

 

Check the wiring up around the AC compressor. It's a known issue, but the one of the wires gets rubbed bare, and it throws the CKP signal for a loop. There it leads to faults which your experiencing.

 

I do not know about bully dog setup but I had to replace the wireing harness for my TST for this issue. If bully dog has a wireing harness that clips in between the sensor and the truck wireing could be the problem.

 

I will take a look at the harness by the compressor, and let you guy know what I find...Thanks

 

No Luck, I checked all the wires around the a/c compressor and any other wires where they may rub. Found nothing any other ideas guys???

 

I have seen the crank gear spin on shaft. Doesn't take much to cause crank sensor code to set. You need to pull 4 bolts that hold balancer on then pull timing case cover you can then see the pin in the crankshaft and key slot in gear. It should line up with key slot in crankshaft gear if it doesn't the gear and pin needs to be replaced.

 

Alright Guys I Got it... I Checked the wires going to the one of the a/c pressure switches and didnt see anything but I installed a loom over it anyways and then started the truck...ALL BETTER... I guess i cant see very well lol. Thanks a ton for the help guys.