expertshooter22
New member
Maybe somebody here can help me figure this out... I have owned my 85 CJ7 for 3 years now and have never had the Temp Gauge working on it. I recently rewired the entire jeep with a painless harness (which worked out awesome by the way) and replaced the Temp gauge and sending unit at the same time. I know the gauge is working because when i ground out the signal terminal on it the gauge climbs to the hot position.... when i test the sending unit when the motor is cold it measures approximately 180 ohms. At normal operating temperature the sending unit measures somewhere around 45-50 ohms, which leads me to believe the sending unit is working as well. when i hook up the sending unit wire and test it under the dash it reads the same ohms as at the unit. But when i hook it all up and the motor is warm nothing happens to the gauge. I am starting to pull my hair out because of this, hoping someone will be able to give some advice, the only thing I am not sure if I am testing properly is the jumper wire that goes from the fuel gauge to the temperature gauge. When i test it the voltage meter goes crazy, anywhere from 1 to 7 volts fluctuating at the speed of a machine gun ( which i am told is what it is supposed to do but doesn't seem right) Anyway, any help would be greatly appreciated, i don't like getting my butt kicked by a temperature gauge.
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