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Re: Engine Oil Pressure Stuck at 50 PSI
Posted to HD/Fleet Forum on 4/17/2020

OK I may have some insight. Some diesel engines (Cummins was one) used a switch instead of a sensor. If it only has 2 wire sensor that may me the case. You can verify this by checking resistance at the sensor (unplugged) then starting the engine. The resistanc... Login to read more.