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Fairgrove's avatar
Fairgrove
Explorer
Sep 11, 2013

How to adjust oil pressure sender to gauge (potentiometer)?

My oil pressure sending unit went bad and I could not find a direct replacement. I purchased and installed one but the gauge is reading about 30 pounds too high. I thought I could install a potentio...
Class A
dangerbird's avatar
dangerbird
Explorer
Sep 11, 2013
You could experiment with various resistance in parallel with the sender. This would serve to lower the overall resistance. You could get the gauge to read zero without the engine running. I would be concerned with inaccuracy over the total range depending on whether the sender is linear or not. Best keep looking for a correct replacement.

Carl

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