Quite a few months back I noticed while I was warming my truck up the engine sounded a little strange.By strange I mean the tone of the engine seemed to fluctuate.I have since upgraded the lift pump to an Airdog with gauges.Fuel press. is fine although I dont know what it was beforehand.Long story short I decide to check for codes and came up with the injection pump timing failure code p0216 if I remember correctly.That was quite a few months ago and the truck is still running good,no starting or stalling issues.Although every once in agreat while I have gotten the DEAD PEDAL.So I guess I am on borrowed time?Oh by the way I'm the original owner of the truck which is an '02 auto totally stock with 69000 miles.

 

Believe you have pegged your delima correctlly. Would not go on long trip without replacing. JMHO

 

Replace the VP44 yourself. It's not all that difficult and there are several on-line guides in this forum that are excellent. It also provides you the opportunity to get a hands on knowledge of the fuel injection system of your Cummins. It certainly did for me.
I installed a Blue Chip VP44, which features a new circuit card, avoiding the solider crystallization due to repeated heating cycles. Additionally, they install a steel bushing, which replaces the brass bushing that wears quickly. It costs a bit more at $1300 but in my estimation, worth the cost. They also provide detailed instructions and the loan of the key removal tool.
I also run 2-cycle oil in every tank of fuel ( 1 pint/1 gallon, Walmart brand) to replace the lubricity lacking in the ULS diesel #2 we now have to buy. That also provides more cooling to the pump's operation.
Cheers.