Engine/Transmission (1998.5 - 2002) Lift Pump?????????

[SHobbs]

Not sure if I have a L. P going south or if it's the guage, isolator or both. Changed the fuel filter Sat. no problems priming after the change every thing was normal. Before the change at idle I had 13lbs of pressure, rock steady. Now after the change I am reading 11lbs at idle, again steady. At 70mph on the freeway it stands steady at 7lbs. I can suck it down below 5lbs at anytime.

I have been having problems with the isolator but that problem results in an increase in the pressure reading. Is the L. P pump going south slowly, maybe there is some air in the line for the guage or the isolator is shot or the guage. I always thought when the L. P died it just quit. Usually after a few starts the pressure returns to normal but not this time I drove over 300 miles after the change and no change in the reading. Any help is appreciated.

Thanks

Scott

 

[Bandit2]

Sounds like your LP is doing about the same as mine was. I have a mechanical gauge and the reading was all over the dial. Installed a new LP, end of problem. Since then, with the help of TDR and Valcan Weld, I have mounted the LP back at the fuel tank. Peice of cake. I am now going too mount a fuel filter with a drain on the bottom, just ahead of the LP on the frame. Comeing from NAPA,less than fifty bucks. Will then be useing two fuel filters.

 

[MarkMiller]

Practical Solutions has a kit to move the LP next to the tank. http://www.psdieselproducts.bizland.com/