Hey yall, I have tried to track down a few issues with my "new " truck which was "rebuilt" before I got it with the 3.0 anyway the few issues are

1. A burnt resistor in the ECM, sourcing replacement now and have done electronics repair before. I expected bad Capacitors but found none.

2. Codes: 12 and 52 knock sensor and rpm signal. I'm not really worried about the rpm as my tach works and everything there seems fine. the code 52 is probably the pigtail but I sure don't want to do that job on a whim....... grounds around the truck seem fine maybe overcharging but more later on that

3. THIS random unplugged connector, I need help to ID it. I don't see anywhere it should go!!!! It starts from the pass fender and joins a loom going back into the cabin behind the fender liner, presumably through the firewall by the ECM. Light green and green with yellow stripe two wire grey snap connector.

any help would be appreciated, I might start a build thread when I get closer to the om617 diesel motor swap, but I want to drive with the 3. slow until I get everything lined up.

 

The FPU (Fuel Pressure-Up) VSV (Vacuum Switching Valve) should have a Gr-Y wire and a W-R wire. Are all of your VSVs accounted for?

(You might have to rub some cleaner on the wires, to learn the original color.)

 

Yea those valves are all connected to an electric. Dang

I can try to take a better pic of the wires.