Winr

Need a little diagnosis help
My father in law has a 02 with a 6spd @ 100K mi. Recently it has developed a low power condition when started cold ( engine is at ambient temp) after a few miles every thing seems fine. We recently put fuel filter in it - no change
At 70k he had a new inj pump
Any ideas?
Thanks in advance for the help

oscgalis

Have you checked it for codes?

v8440

Perhaps his grid heaters aren't coming on?

Mopar1973man

I would check the IAT sensor... Clean it and check the ohm value... This will affect the way it runs from a cold start...

http://dodgeram.org/tech/dsl/sensors/IAT/clean.htm

The only other thing I would check is fuel pressure... Highly suggest getting a fuel pressure guage...

Also with the colder temps coming on... diesels don't really have a lot of power from a cold start. I would drive light (shift below 2K) until the coolant temp rises up to the normal range. Waiting for the oil pressure to come down (to about 40-50 PSI)

Winr

Thanks for he help I will pass the info on ( probably do the checks too)