Engine/Transmission (1998.5 - 2002) New VP44, low power

[KcoleKennyc]

I have a friend that I convinced to buy the Dodge instead of a Ford. He called when he was ready for a new one and asked what to buy. He listened and bought an '02 3500 cab and chassis with an HO/6speed. The truck has about 50,000 miles on it. He has been very well pleased and hasn't had any problems until recently. The VP44 went out, dealer replaced lift pump first, that didn't fix so they replaced VP44 next. He owns a tractor dealership and pulls a small gooseneck, never pulls very much weight. Since the pump was replaced, the truck has very little power. On a 4 mile flat stretch of road, it will run 65 mph, grossing less that 20,000 lbs. It is sick compared to the way it ran before. He goes back to the dealer, they check the truck and tell him that the pressure had been reduced on the replacement pumps and there is nothing wrong. He bought the HO for the extra power and now they have taken that away-doesn't seem right to me. Seems like they would have to keep it the way he bought it. Has anyone else heard of such a thing or have any idea what may be the problem?

 

[GregFisher]

make sure dodge put the right pump on, not that they would ever make an error his pump # should be 0470506028 which is the bosch # for an ho vp44.

thanks greg

 

[KcoleKennyc]

Thanks for the part#. I had this same thought but we had no way of knowing. Maybe there is a sticker on the pump so we can tell. Even wondered if Bosch could have put the wrong part# on it. There's got to be some way to check the pressure. It doesn't set any codes but something if definitely wrong. Maybe if he bugs them enough they will find the problem.

 

[Gary - K7GLD]

Here's where the part # for the pump is located:



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. . That's on the side of the pump (towards the fender) just below the pump top cover - might need a mirror to see it once installed - the last 2 digits "27 0r 28" are the important ones... "27" is for a standard output engine. "28" is for the HO... I'm told that having the wrong pump can make a big difference in performance that can only be corrected by installation of the RIGHT one!

 

[AKAMAC]

If the part # matches make sure the Tech installed the right keyway. The timing may be retarded. Mike