Rear Engine Oil Temp

[Bob Cook]

Paul

The guages have a voltage regulator as a source of stable reference. I have a feeling the voltage regulator may be at fault, however, both front and rear should drop if this occurs.

The sensor itself is a thermistor or a resistor that varies with temperature. There is a possibility they could jump based on an internal fault. This can be caused by a temperature shift.

Think I would swap the sending units or the wires to the guages and try again.

fyi

Bob