Engine/Transmission (1998.5 - 2002) Lift pump noise

[Motorhead]

Does the lift pump get noisy wheh it is crapping out? I have 34,000 mi. I checked the pressures with a test guage about a month ago. 12psi idle, 8 at cruise, 4 at W. O. T. It seems to be getting noisier when you tick the starter and it runs for the 30 second cycle. Chris

 

[duaneparks]

Based on the 8 psi minimum at WFO, I'd replace it if I were you. It's not a matter of if, but rather when yours will go out.



HTH.



Duane

 

[Motorhead]

Do you think that I am harming the VP 44 at cruise pressures? I'm taking a 200 mile trip today. Tha truck is going in to DC in a week for the last of the warranty work. Chris



P. S. duane, what does WFO mean?

 

[duaneparks]

WFO (Wide Friggin' Open) means the same as WOT or Wide Open Throttle... sorry about that.



As far as harm being done, I doubt you'll seriously harm the VP44 as long as you don't run it hard. The VP44 needs a minimum of 8psi according to DC's STAR Line, and anything below that warrants a replacement as long as the truck is under warranty.



I wouldn't wait too long though, better safe than sorry. I'd much rather replace a $140-160 part than a $1350+ part. Even more so if it's still under warranty.



HTH.



Duane

 

[Motorhead]

Thanks,duane... I like that . I am running less than 8psi at W. F. O. Wife,daughter and I put 250 miles going to the San Jauquin Valley today to go to the Indian casinos. Left a few bucks, drove another 35 miles to a Cattlemans Steak house... MMMMMM. My truck ran so good. Edge set on low. Wasn't anyone on any hill or straight that I couldn't SAFELY pass with lots of room to spare. Even my Wife commented how good the truck ran. 34,000 mi on it and it runs like a train!! Chris

 

[jwinnie]

Motorhead,



I replaced mine at 36,000 and it was very loud compared to the new one. now I can't hear it run before startup unless I'm under the hood.

 

[duaneparks]

Originally posted by Motorhead

Thanks,duane... I like that . I am running less than 8psi at W. F. O. Wife,daughter and I put 250 miles going to the San Jauquin Valley today to go to the Indian casinos. Left a few bucks, drove another 35 miles to a Cattlemans Steak house... MMMMMM. My truck ran so good. Edge set on low. Wasn't anyone on any hill or straight that I couldn't SAFELY pass with lots of room to spare. Even my Wife commented how good the truck ran. 34,000 mi on it and it runs like a train!! Chris

These trucks ARE awesome. Even when mildly BOMB'ed like you and I are, they're quite powerful and will surprise you (and a few riceburners).



Get that lift pump replaced and enjoy all that performance with a little more peace of mind...



Duane