I just put a new VP44 on my truck last year. It has had less than 7000 miles on it. THATS RIGHT!!!! 7Kmi.!!! I was pulling a little trailer down the road and all of a sudden, the truck sounds like it kinda backfires, then nearly shuts down. Slowly, it rolls back on and continues to do this as it demands more fuel to get back up to speed. It happens at lower RPMs if I stick my foot into it. I have a FASS 150GPM inline and haven't run this thing out of fuel by accident. I was told to check the relay on the fuse block but don't think it would cause an intermittent problem. My P-code list is as follows and would appreciate some input:

P0122- APPS Low input
P0236- Turbocharger Boost Sensor A Circuit Range/Performance
P0500- Speed sensor malfunction
P0753- Shift solenoid "A" circuit electrical ???
P0743- Torque Converter (I have a mystery switch)
P0748- Governor Pressure Sol/Control Trans Relay Circuits
P1492- Battery Temperature Sensor Voltage Too High
P1763- Governor Pressure Sensor High ???
P1689- communication between the engine controller and the injection pump


Edit- The engine is '02 24v, Edge "Comp" box, Trans: Goerend manual automatic with switch, T-case: NP242DHD, all in a HMMWV.