Posted February 22, 201015 yr I looked it up and its stating It has no communication between ECM and injection pump module....Sooo what do I look for and how do I fix it? Any clue's guys, I dont want to live in the dog house!!
February 22, 201015 yr Were you able to restart the truck after it died or has it not been able to start? Mike has a write-up on common VP44 error codes here:http://mopar.mopar1973man.com/cummins/2ndgen24v/vp44-replace/vp44-error.htm
February 23, 201015 yr Owner Check the fuel pump relay in the PDC if it fails it will trip a P1689... Here is a daignostic write up for VP44 error codes... http://mopar.mopar1973man.com/cummins/2ndgen24v/vp44-replace/vp44-error.htm
February 23, 201015 yr Author Thanks for the info...the truck started back up and still has good fuel pressure?
February 25, 201015 yr Owner Just so everyone knows what a VP44 puller looks like... (I know you asked about in a PM) Even works on 12V trucks too... Later on I'll go get my homemade puller out... (Redneck engineneering)
March 2, 201015 yr Author Well i changed the VP44 and it still is a ****** to start! Great fuel pressure still. The only things I didnt change in the fuel system is the line going from the fuel filter to the pump, the injectors themselves, and the original injection lines. I dont think if i spray soap on them they would show a air leak. What do you guys think? Im about ready to drive it in the pond. Its got to be a air leak, but where????
March 2, 201015 yr Owner Air leak is going to most likely be on the low pressure side. I would suggest you pressurize the fuel tank with some air and search for the wet spots in the fuel lines. Only need 1-2 PSI to find the leak... Take a rag and a blow gun and stick the blow gun in the filler neck and pack a rag around it. Then have a second person search the fuel system while you keep pulsing air blast into the fuel tank.
I looked it up and its stating It has no communication between ECM and injection pump module....Sooo what do I look for and how do I fix it? Any clue's guys, I dont want to live in the dog house!!