Temperature gauge does not work on my 1970 340 Duster ?
Thanks but I doubt that the reason the gauge is not working when the engine is running, is because of low coolant. I checked coolant level, also that the thermostat opens and that it is not "vapor locked". Again when the engine is warmed up and running, the gauge never moves. But when you shut the engine off, and turn the key to the 'ON' position it will read the proper temperature. Start the engine and it immediately moves to the bottom or cool position.