odonnell

As soon as I start the car, pressure gauge jumps to ~4 bar, doesn't move whatsoever. RPMs, oil temp, etc... doesn't matter, it's stuck and tapping the gauge does nothing.

Shut off engine, gauge goes back to zero (so gauge itself is not stuck).

Crank back up, and it works as though nothing was wrong. It almost alternates between working fine and being stuck at 4bar. Any info would be great, and any suggestions to avoid a $45 part would be even better

mytrplseven

As you're probably aware, on start-up of a cold engine, the oil pressure should go to max range on the gauge and then after the car heats up, it should typically run betweet about 2 and 4. Are your symptoms noted on a cold engine or warm engine?

odonnell

Cold. But it jumps to 4, and never comes back down to ~3.5 when it warms up. It's frozen on 4. When it works correctly, it starts nearly at 5. So it's clearly a malfunction.

NM'87 951

Oil pressure sensor?

odonnell

Isn't that the same thing as the sender? AFAIK it's one composite unit

NM'87 951

Could be. I'm not real familiar with unit in the 951

Voith

http://www.clarks-garage.com/shop-manual/elect-19.htm

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