OK so I replaced my crank sensor, cam sensor, cap and rotor all the plugs and wires and the ignition coil. When I start my truck it is fine. It isn't until it get up to temp where it starts acting up. My tach goes anywhere from a couple hundred difference to 1000 rpm difference. It doesn't respond when I hit the throttle it also backfires and shudders like it isn't firing correct. It has an active code for the crank sensor but like I said I just replaced that, but when I shut it off a couple of times it fixes it's self and doesn't seem to do it again. Please help!!!

 

What brand sensors did you buy? Our trucks really don't care for the cheap, aftermarket fellers.... best to get them from Dodge.

Welcome to DF!

 

I bought the crank sensor from advance I'm pretty sure it was a carquest by BWD

 

May wanna return it, and get one from the dealer.... See if that doesn't address the code.

Also, keep in mind, depending on which exact code you are getting, many of them refer to both cam, and crank sensors.... so, it's a crap shoot which one is actually bad. Cam sensor is at least easier to change. (it's under the distributor cap, parts stores refer to it as 'pick up coil'.)

 

Yea I replaced both of them got the cam sensor from napa their brand

 

And still getting the same code?

If you are, make sure the sensors are getting their 5 volt reference signal.

You can get a service manual for your truck from here. Wiring diagrams are in section 8W.

 

No different code it saying like temporary loss of crank

 

Check connections first then, especially at the PCM. Make sure all those connectors are clean, and tight.

 

OK where is the pcm located

 

Under the hood, passenger side, right on the firewall. There is a FAT wiring harness running to it, so, hard to miss.