64 Polara Temp Gauge

[Terry1213]

Does anyone know the correct resistance range for the temp sensor in the water pump housing, cold to hot? I read 665 ohms to 95 ohms. The sensor wire ground test pegs my temp gauge but I never get a temp reading during normal operation. That's why I suspect the sensor.

 

[T Brashears]

I have 2 sensors in my 65,one for the factory gauge and one for the aftermarket gauge. The factory gauge sender reads about 28 ohms and the aftermarket gauge sender reads 68 ohms . cold in my garage is roughly 60 degrees. When the aftermarket gauge reads 180 the factory gauge is on the line so I trust them both. It,s raining here so wont be backing it out to get a hot reading,garage is under the house! You may want to check the resistance between the base of your sender and the housing,one possibility could be a dirty connection in the threads.