Fuel Injector pump PROBLEMS??????

[KBock]

I got the injector pump code off the diagnostic code scanner. My truck just seems to stop getting power sometimes. You can put the pedal top the floor and the truck will go any faster. Seems to kick in at all speeds and all gears. The truck stays running and if you turn the key on and off real quick while it's doing it, it seems to reset something and fixes the problem, but only for so long. There's no certain time that it does this. Although it does seem to do it more when the truck is colder. I looked the code up the scanner gave me (can't remember the code # off the top of my head) but the code was for the Fuel Injector Pump. I'm sure someone else has had this problem before because I heard it is a common problem. Is there anyone that can offer some advise as to if it could possibly be something else that would be throwing that code? The injector pump is very expensive, and was wondering about maybe there are bad sensors or anything else that would be worth giving a shot before I go ahead replace the injector pump. Please help me, this problem is very annoying and hope there is a cheaper fix to this problem....PLEASE HELP!!!!!

TRCUK INFO:
2002 Dodge Cummins 5.9L 24Valve 4x4 Manual Shift