I think my LP is dead...go figure!

[NPloysa]

LP is dead...go figure! Suggestions?

Well, my LP is giving out on me. This is the second one since I bought the truck used in 11/02. I installed the first one in 45 min. This is how I found the symptoms.



I do not have a fuel pressure guage but check it regularly with a portable guage.



I usually start out in 2nd gear, even with my 3. 55s. The thing will pull and never stall, the ECM won't let it. The truck sputtered twice starting out in 2nd gear, and stalled on me in traffic yesterday. I tested the LP by bumping the ignition, it usually runs for 30 seconds to prime the system. Sometimes it would prime, sometimes it would not. I got it to prime many times so I drove it again. In traffic yesterday, after the stall, I limped it all the way home, hoping my VP would not die and leave me on the side of the road.



As I stepped on it, in 4th gear, with my FMS on 63% (maxed) fueling, the truck seemed to have puked and sputtered. Kind of like it has air in the lines, or the LP is stuck and the VP is pullin fuel/air past the LP vanes.



Since my truck is a 99, it doesn't show codes without a scanner and I have been leary of driving it out of the garage to Autozone to get codes checked.

Now, I am going to replace my LP, and will most likely do that before I check codes, just in case, and because I don't NEED my truck everyday like I used to.



I think I am going to get a stock LP, replace it in stock location, due to time/money constraints right now, and get my VP checked. If it checks ok then I am going to relocate my LP to the frame and look more into a FASS. I just don't have the $550 for a FASS right now. And if I need a VP, cross my fingers, I am thinking about a modified VP from Industrial Injection or Piers.



Now if I just had that motorcycle already I could have a second vehicle!



So, if you were in my shoes, what would you do for each pump, with limited funds, providing both scenarios of LP only, or LP/VP both needing replaced?



Nick

 

[Beast2B]

do the stock LP now. add a pusher or Fass or whatever improvement lets you sleep at night. if the vp fails, which i think would take a while of driving with no LP pressure, i'd go for one of the vp's you mentioned.

i believe the MAIN point is to keep the LP feeding good pressure to the VP.

 

[silverram03]

Hey Nick you should have been at the Central Motive Power meeting earlier in the month. They talked about the VP44's in great detail and all I can say is your better off going with a stock VP44. No need to waste the money on a modified pump. pm me if you want to know more.

 

[mediccummin]

Nick did'nt you pm me a long time ago about moving your pump down by the tank, There was a few guys that I talked with and sent a list of needed parts and pics and I thought you were one of them, if not no worries. I moved mine down there a couple years ago or so and have had great results. Still running strong. Try it out, get rid of all the banjos while your at it and add and another filter. Good luck.

 

[NPloysa]

Yeah that was me! I think I am going to put it back in it's stock location for now. I may be possibly selling my truck for a bike for this summer and then look at a newer 2nd gen when winter rolls around. I appreciate the help though!



Nick

 

[mgoncalves]

If you're going to keep the truck, I would reccomend the Fass II, and the hot rod VP from industrial injection if you need to replace yours. I am 100% satisfied with both items on my truck, and are relatively inexpensive bombs.





Matt

 

[NPloysa]

Thanks Matt, appreciate the advice! But, if I sell it, can I still come to dyno events on my bike?



Nick