Engine/Transmission (1998.5 - 2002) LP and VP44 merry go round

[RichardFerrell]

I"ve been reading this site for a couple of months. Bought a stock 2001 truck and needed to know about its latent problems. Truck runs beautifully, but decided I had better get that FPG installed. Got one istalled (sensor)on the banjo fitting on the injector pump, gage in the cab. Fuel pressure showed about 12 PSI at idle. Left the shop to travel home. Fuel pressure was crazy! Down to two, up to eight, down to zero. Going up a little grade it would drop from 10 psi to zero. Ran great. Got home and called the shop that installed it. They thought the LP was going bad. Was ready to go on 600 mile trip so decided to change the LP before leaving. Installed it. 16 psi at idle. Hurray! Left on the trip and it did exactly the same as the old one! Was going up a good grade in Arizona, (pulling a light trailer) in 5th gear, the gage showing zero. I thought to myself, "what would happen if I went WOT?" I was upset enough that if it blew the darn VP through the hood, at least I would know what the problem was. Went WOT and the darn PSI went right up to 8 psi and I passed every thing on the highway at 2900 rpm. Let off the pedal a little and the pressure went back to zero! Have called several "experts" and have been told just as many "expert" opinions why. Sorry about the length of this. Could tell you more!

 

[Rob Thomas]

Welcome to the TDR, and welcome to the world of fuel pressure.



First thing I would do is remove the sender from the VP (vibrations will kill it in no time) then using a grease gun hose, (about 18", they have 1/8" npt male ends) mount one end of the grease hose in a banjo fittin on the filter housing (pre or post filter is up to you) and then attach the sender to the other end of the hose, and secure the sender somewhere on/near the drivers side fender, (some make a bracket and attach it to an existing bolt in the area).



After you do this, check back with your pressure findings.



Rob

 

[Gary - K7GLD]

Gotta mount the sensor away from the engine as Rob said - here's how I did mine:



#ad






Good luck

 

[RichardFerrell]

Thanks for the info and help Rob and Gary. I have about 7000 hours flying an airplane and my wife says I'm having more fun with a truck than I ever did up in the air! (At least if something stops working it will coast to a stop)