Engine/Transmission (1998.5 - 2002) VP44 Died...Stock truck.

[gradylaw]

I have read some posts saying the only time these things give up is on a modified truck. I beg to differ. 62k miles, bone stock, power service or lucas added almost every tank, original lift pump still 14-15psi at idle and 10 at WOT according to my BD X-Monitor. Bought it new and never did anything to alter fuel flow. She's at the dealer now getting a new one under warranty.

My 2 cents worth.

 

[John - K5AWO]

Um, a good read reveals that a lot of stock trucks have lost their lift pumps. Just 3 or 4 days ago a lift pump was dissected and photos revealed that internal electrical/physical failures are what is the cause. Not the fuel flow.



The last one reported had two capacitors physically fall loose from the controller circuit board. One of them fell into the gearing which stopped the armature from turning.



My personal take on all of this is vibration is the main culprit. Move the lift pump OFF of the engine away from that constant diesel knock and onto the frame where life is quieter and cooler.



These pumps should have been frame mounted next to the tank from the factory from the gecko... . ooh, a pun on something?

 

[Turbo Tim 1]

John, his injection pump died the lift pump is still good!

 

[Guest]

"""I have read some posts saying the only time these things give up is on a modified truck. I beg to differ. 62k miles, bone stock, power service or lucas added almost every tank, original lift pump still 14-15psi at idle and 10 at WOT according to my BD X-Monitor. """"



""""Um, a good read reveals that a lot of stock trucks have lost their lift pumps"""""



Hilarious!!!! Hey John, you speak of a good read but, you yourself needs to do a good read, like Gradylaw said he lost an INJECTION PUMP, not a lift pump, sorry for the a**ed 9 comment but a good read involves a good read...

 

[Leroy D]

That reminds me of Gilda Radner------"never mind"

 

[Turbo Tim 1]

I have a feeling the wolves are going to get let loose on this one

 

[gradylaw]

Don't know how the dulpicate posts showed up. Tried to delete them but it won't let me. Sorry if I goofed.

Salud

 

[mhenon]

VP 44

I believe when Bosch developed this pumped they figured that no more than 10% would fail within 100,000 miles. I guess thats OK unless your the guy that gets one of the 10% 'ers. Sounds like thats what happened to you.

But, to say that those folks doing power mods aren't going to have a higher failure rate... . well thats wrong... they are. If the pump is designed for 250 hp and you crank it up to 350 hp doesn't the failure rate have to go up too?

Sounds like you did everything possible to keep it going and it just failed.

Mike

 

[jpmutt]

I have replaced many injection pumps on completely stock trucks, many with transfer pumps in good condition. I will say it again... that a huge problem with the transfer pump, is the lack of volume. I have had several bite me, you know where, because I dind't check volume and only checked pressure. I would be willing to bet the transfer pump is bad.

 

[gradylaw]

O. K. so I hate to open Pandora's box but what can I do, if anything, without installing a whole new aftermarket system and trashing everything from the filter (or VP) back? Will my new pump be any better than the old one? I suppose it would too much to think that Bosch or DC would want to install a new and improved unit.

Thanks for the input.

 

[rweis]

Can you find out WHAT broke on the VP?



With good lp delivery, water could be a player. Water turns to superheated steam and grossly over pressures the VP internals.



If you could find out WHAT broke on the VP it would help.



Bob Weis

 

[Gary - K7GLD]

Shucks - anyone thinking only MODDED trucks lose injection pumps isn't really paying attention here, or is new to this or similar groups...