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Jäger
Joined: Jan 2005
Posts: 5,491
Likes: 5
From: Northern Arizona
Did you install an aftermarket hi-pressure or hi-volume oil pump? Does the psi build gradually when you start the truck or does it sweep immediately to 60?
I believe there should be some variation between idle psi and 2000 rpm+ psi.
Not sure how 60 psi would be bad for the engine, unless the gauge isn't reading properly.
I believe there should be some variation between idle psi and 2000 rpm+ psi.
Not sure how 60 psi would be bad for the engine, unless the gauge isn't reading properly.
Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
By mechanical gauge do ya mean it has a plastic oil line running to it or electrical wire? I ask this because some folks call all after market gauges mechanical. If electric I would say that the sending unit is bad. Take wire off sender and ground it. This will peg the gauge high if the gauge is good. If it has an oil line than I would again suspect the sending unit. It could also be that someone has chanced out the sender and it is wrong for the gauge. But this should only give you a false reading and the gauge should still change do to RPM.
Senior User
Joined: Jun 2006
Posts: 252
Likes: 0
From: Sac CA.
If it has the oil line, you won't have a sending unit, just a fitting to connect in to the oil passage to the back of the guage. With the oil line type, the pressure will very depending on the rpm, idle = low value, increase rpm= higher value.
Posting Guru
Joined: Jul 2006
Posts: 1,720
Likes: 1
My guess is it is an electric gauge with the black wire going to the engine block vs. the pressure sending unitl. It could be a direct reading gauge with the oil line going to the engine block, but my guess is that it isn't. Jim
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Junior User
Joined: Aug 2006
Posts: 70
Likes: 0
From: bogart georgia
its a mechanical gauge with the oil line coming from the gauge threw the firewall to the engine i put it in place of my old sending unit. what could be causing this reading?
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
Ya might try burping it. Break the line loose at the gauge and let the air out. Have a wad of paper towels handy.
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