partsandservice
Senior Member
563c wheel buncher JCB00321. Oil pressure reads 34psi continuously, engine running or not. Found engine oil pushing into the plug, so I replaced the pressure sensor which changed nothing. Ohm tested the three wires to ecm plug all checked ok. Three wire sensor. I have 5volts supply voltage . The signal wire has 1.66 volts engine on or off. When I have the oil pressure sensor unplugged. The signal wire reads voltage close to 12v. Any ideas would be appreciated .