No power to the Lift pump [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: No power to the Lift pump


zodiak12
07-28-2009, 08:22 PM
I have a 95 Tahoe 4x4 2 door. Stalls after start and also has a heavy miss. First thing I checked was the LP and it has no power to it with key in pre start. Does this pump run continuous? What fuse does this pump get power from?

DieselPro
07-28-2009, 08:52 PM
oil pressure switch

zodiak12
07-28-2009, 09:23 PM
Thanks I will change that tommorrow. I'll keep you posted....

M123KT-450
07-28-2009, 10:48 PM
Yuppers i had that happen right as my PMD failed ! I got a new lift pump still wouldn't run so i ran it to a toggle switch then it ran but like crap as the PMD was flaking out. . .
Never did fix it my OPS my LP is still on a toggle switch sure make changing fuel filter n bleeding them a snap. . .Just a suggestion . . .



Mike

94K30
07-30-2009, 07:50 PM
I have a 95 Tahoe 4x4 2 door. Stalls after start and also has a heavy miss. First thing I checked was the LP and it has no power to it with key in pre start. Does this pump run continuous? What fuse does this pump get power from?
94 and 95 ( OBD-1) does not run lift pump when glow plug cycle running, only when there is oil pressure or when actually cranking......
Fuse for lift pump is on firewall, near the lift pump relay....

zodiak12
08-16-2009, 08:06 PM
Diesel Pro, you where right! It Was the OPS. Changed it and works like a champ THANKS!!