Not sure what happened over the winter, but my oil pressure gauge is now pegged to the right. Worked fine all last driving season. Can a shot sender unit be the cause? Mine is really old.

Try changing to clean oil & cleaning the sender good first, & check the wiring & connectors up to the console gauge. May just be gunked-up.


Tom
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Did you fiddle with the wires? Sounds like you switched the sending unit wire and ground wire on the gauge.

G stands for "Geber" which means sending unit in German, it's *not* ground ...

My guess, wiring - check connections and then possible grounding.

Something electrical--
You unplugged the wire (though I think that would cause a zero reading rather than high)
You smashed the wire somewhere, shorting it to ground
The case of the sender is no longer grounded correctly
You hooked it up wrong

--DD

Wire touching ground. Sending wire gets brittle from heat, breaks insulation and touches the metal brackets that hold it. Now you have the sender grounded out.

Either that or in the sender. Remove the se der wire from the sender. Connect an Ohm meter to the sender terminal G and to ground. If it shows continuity to ground the sender is bad. It should show a low resistance level and change with oil pressure change.

Thanks for all the advice. I am going to snoop around and see if anything got messed up. I think I will start by taking the gauge out and wiring it direct to the sender. If it works, that should take a sender issue off the table.

Remove the wire from the sender if the gauge drops it's the sender, if it doesn't the wire is shorted to ground somewhere.