I've been trying to figure out why I have a surging around 45-50 mph in OD with little pressure on the pedal. If accellerating through this area NO Problem. Reset the voltage on the Apps (.049). Checked all ground connections, clean battery terminals. It seems to be getting worst. Now its 45-55 mph. When setting in Park, the Engine will idle smooth for awhile then the rpms change about 100 or so. Sounds like an engine miss. I have a code I don't understand. Checked on the code list= P1475 Aux. 5 Volt Output Too High. Can anyone give a clue what this is. Also when the truck is in the rough idle it sounds like a valve or two needs adjusting. Of course it runs smooth most of the time and you don't hear this extra sound. It started the rough idle part just after installing the HRVP44. Any guesses.

Regards,
Gene

 

My suspician is, that when the valves sound like they need to be adjusted the cylinders aren't getting the fueling that they should. The one part day the engine ran the way I should have recieved it from new, the tone was much deeper, and had power !!!!! It is being caused by poor or bad voltage! I suspect that there are alot of these trucks running around.