Attention: TDR Forum Junkies 
Hey guys and gals, I've been reading the threads for years now and they have been very helpful. This one is a bit different, so bear with me on the explanation. For starters, I have a '06 2500 MegaCab aka the redneck-minivan. Engine is bone stock, 104,000 miles on it. Meticulously maintained, the transmission was rebuilt at 75K with billet input shaft, billet valve body, and billet torque converter. Never chipped or tuned.
Last week, I was pulling a grade without a trailer to pass other vehicles and my pickup acted like it wasn't delivering full power, the engine surged slightly and the engine light came on. I ran the OBDII code reader and it came back with P0148 Fuel Delivery Error. Well, always going in order of most simple to out of my level of knowledge, I figured that the fuel filter was so bad, it wasn't allowing the proper amount of fuel to the pump. The filter was replaced prior to this 3,000 miles ago, but nevertheless, it was fairly black. I run injector cleaner every other tank too. So, I cleared the code, warmed up the engine and laid on the throttle. Same response!
Next, the FCA (Fuel Control Actuator). Ordered a brand new Bosch from Cummins directly, slapped her in and, you guessed it, same code thrown when above 90% throttle.
The next part I am throwing at her is the BOSCH F00R000632 PRESSURE RELIEF VALVE, two bolts and done. I'll let you know what happens, I'm waiting for the part to arrive hopefully by the 1st of October.
Here is the short list of other possibilities I am thinking:
Pickup tube from the tank.
Lift pump - that was replaced at 76K so not super likely.
Injector Failure - also unlikely: ran the diagnostic tests with flow percentages and everything is perfect.
CP3 Failure - but no tests have been run other than fuel rail pressure at idle/without a load and it checks out
Any suggestions or similar symptoms would be greatly appreciated! Six pack goes to the winner!!
Last week, I was pulling a grade without a trailer to pass other vehicles and my pickup acted like it wasn't delivering full power, the engine surged slightly and the engine light came on. I ran the OBDII code reader and it came back with P0148 Fuel Delivery Error. Well, always going in order of most simple to out of my level of knowledge, I figured that the fuel filter was so bad, it wasn't allowing the proper amount of fuel to the pump. The filter was replaced prior to this 3,000 miles ago, but nevertheless, it was fairly black. I run injector cleaner every other tank too. So, I cleared the code, warmed up the engine and laid on the throttle. Same response!
Next, the FCA (Fuel Control Actuator). Ordered a brand new Bosch from Cummins directly, slapped her in and, you guessed it, same code thrown when above 90% throttle.
The next part I am throwing at her is the BOSCH F00R000632 PRESSURE RELIEF VALVE, two bolts and done. I'll let you know what happens, I'm waiting for the part to arrive hopefully by the 1st of October.
Here is the short list of other possibilities I am thinking:
Pickup tube from the tank.
Lift pump - that was replaced at 76K so not super likely.
Injector Failure - also unlikely: ran the diagnostic tests with flow percentages and everything is perfect.
CP3 Failure - but no tests have been run other than fuel rail pressure at idle/without a load and it checks out
Any suggestions or similar symptoms would be greatly appreciated! Six pack goes to the winner!!
