Temp gauge not working

[John G]

Hello all. My temp gauge isn't working at all. The fuel and oil are showing half way. I suspect that the instrument voltage regulator is probably the reason. Until I get the energy to take the dash apart, I thought I could hook up a temp gauge under the dash.

Question: I should be able to test the signal coming in by putting a test light to the inside bulkhead connector, correct? And if I am correct and there isn't a signal, that means I have a problem with the wiring on the engine side or the sensor.

Thanks in advance for any help

John G

[John_Kunkel]

There is no incoming signal, the engine temp sender is a variable ground. Remove the wire from the sender and ground it to the engine block, then turn on the key and watch the needle on the temp gauge; it should climb toward full hot. If not, the sender or wiring is faulty.

[John G]

John Thanks very much for the info. Have to wait until next weekend to try it.

Happy New Year