oil pressure gage

[greg press]

Late last summer my oil pressure gage quit working . I’m sure oil pressure is good because I drove the car many miles when gage said 0 and it run good .When you turn ignition switch on it jumps and goes back to 0 .I checked the fuses they look good . There is a 2 inch plastic enclosed inline fuse that I have yet to take apart . But I plan to soon . I put a new sending unit in [nothing changed] I checked the wire going to sending unit no power [ I checked it with one of those lights with the alligator ground clamp.] When the car is running should there be power there . When the car is not running with the key on should there power there.

[newkitman]

Greg. You don’t have Teflon tape on the sender threads that thread into the engine block do you? The Teflon tape interferes with the ground. Just a thought ❓ If not, from what you say you have either a missing wire or a bad gauge.

Allen Caron
VW based 53MGTD - "MoneyPenny"
"If one thing matters, everything matters" - from the book The Shack

[Royal]

The in-line fuse should be the very first thing to check. 

[billnparts]

amen

Bill Ascheman
Fiberfab Ford
Modified 5.0, 5sp., 4:11
Autocross & Hillclimb
"Drive Happy"

[greg press]

In line fuse looked good . I replaced it anyway. If I remove wire from sending unit and test it with my test light should there always be power there when car is running

[Dbanta]

Make sure the gauge is grounded properly. Make a new temporary ground wire and run it straight from a known good ground to the gauge. You could also make up a long wire to run from the sending unit to the back of the guage. Check for power at the back of the gauge.

In wine there is truth, in water health.

[Royal]

Dean’s got the right approach. 

[greg press]

That’s exactly what I was thinking . I thought I would check with you guys before I started something that wasn’t necessary .

[Author]

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