bad lift pump or gauge? - TDR Roundtable

bad lift pump or gauge?

04-19-2005, 12:28 PM

#1 (permalink)

Scrappy

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Join Date: Nov 2001 Location: Princeton NC Posts: 1,360 Photo Gallery Old Reader's Rigs Gallery

bad lift pump or gauge?

A couple days ago my gauge started reading erratically. when I first noticed it it was reading 1.5 psi, I stopped the truck, shut it off and bumped the starter and got 2.5psi. On the next start, it was back to the normal reading of 6.5 psi until I pulled the pressure down @ WOT and stuck at 2.5 psi again.Now the gauge might get up to 1.5 psi after the truck has been running for a little while. Could the lift pump be dying or is my gauge TU? The gauge is a mechanical DiPricol that I put coolant in the line after the isolator, there are no visible bubbles in the line and the coolant is still green so I don't think the Isolator is bad.Will a lift pump go bad intermittently like this? I am going to the local Cummins place to put a gauge on it this morning

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Last edited by Scrappy; 04-19-2005 at 12:31 PM..

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