oil pressure gauge

[deaf_rattle]

Having problems with my oil pressre gauge (autogauge electrical)

there are two terminals on the sender s sendor, w/l warning light

If you pull the terminal off the S the gauge goes to max, with the terminal on S the gauge will go to 10psi even with the car not running.

Pretty sure its earthed properly, but im about to look into that.
Would this be a faulty sender, or more likely to be faulty wiring?

Cheers

[l1ttle_d3vil]

I had a similar problem - one day the oil pressure started showing max pressure without the engine even running. Replaced the sensor and it was fine.

[CelicaGT8]

Test it on a bench maby, or if you have another sensor swap it.

[deaf_rattle]

How does one go about testing it, im assuming the gauge is ok, that its probably the sensor or wiring from sensor to gauge.
Id rather not buy a sensor to find out that it still gives the same problem. Id rather buy another gauge/sensor unit

[Dell'Orto]

Hard to test, they generally go over a range of ohms (thermistor?), and finding the info would be tricky

[limbo]

Mine was running about half a bar with the ignition on but engine off. I ran separate earth to the battery and to the gauge and it fixed the problem.