dustys24valve

Im sure we'll bump into each other sooner or later. my truck is blue with off road lights and an amber becon on the roof...we prob pass each other constantly:thumb1:

The only code that comes up is P1694....truck ran fine up until last week..it was just dead. I checked for power at all incoming wires to computer at the connection using diagrams found on this site as far as what wire from harness does what....everythin getting power...ohmed out computer grounds from harness to battery and checked continuity of said wires.....Tried to hook up a Snap on scan tool to OBD2 port and it wouldnt communicate with computer.....truck has come up with same code in previous checks when truck still running - - - Updated - - - Does the ecm need to see a signal from crank position sensor before powering pump?

Coventry, RI

Long story short my truck stopped running the other day out of the blue in my driveway. No power going to injection pump or external air dog lift pump. I can jump out relays for both and truck starts and idles only. All power and grounds to Ecm checked out good, evrything i tested pointed to bad ECM. Replaced it tonight and still have same GD issue..... I'm at a total loss right now and dont know which direction to go.......need ideas:banghead:It's a 2002 2500 24v automatic