I have a '99 3500 2x4 5.9L stock. IT STARTED RUNNING LIKE bad fuel sputtering on occasion (NO CODES). This continued after the normal filter change ext... I replaced the VP-44 (BOSH REMAN) and lift pump with a FASS pump. It continued, so I replaced the computer on the motor, REBUILT BY AES IN fL. NOW I AM GETTING A CODE, THE OIL PRESSURE GAUGE WILL NOT WORK, AND THE TRUCK HAS A ROUGH IDLE,FOR 1 MIN THEN THE TACH GOES TO "0" AND THE TRUCK RUNS A LIL BETTER BUT STILL DOESN'T HAVE THE POWER ON THE ROAD. The code was P-0341, si I replaced the CAM and Crank sensors (both). still have the same code, and gauge problems, rough idle.


I wonder if the COMputer wasn't rebuilt correctly???? I never had the rough idle, codes, or gauge problems before.

:s :

I have installed 3 other VP's 2 on another trk and 1 previously on this one no problems.

PLEASE HELP !!

 

Look into your injectors, rough idle could be a jelled up injector nozzle or something like that. Possibly a injector line, I couldn't tell you for sure

 

What fuel pressure are you seeing?