My oil pressure gauge is pegging out at the max and never moves from there. Sometimes I turn the key to on ( the engine is still off) and it pegs to max. I removed the one wire from the oil pressure sensor (a green wire I believe ) and it shot straight to 80 plus PSI even if the engine is off. Does this mean that its the sensor or do I suspect the gauge. Nothing leads me to believe the oil pressure isn't 100 psi plus, except for the hundred of so oil leaks. I also used a ohms meter to measure the resistance. With the engine off, the resistance is zero, with the engine on, it is infinity.