What should temperature sensor resistance be when cold?
What should temperature sensor resistance be when cold? The resistance of the sensor between the body of the sensor and the sensor connector tag should be ~140 Ohm when cold. (you can do this out of the engine) If it reads ~30-50 Ohms or even s/c (short circuit) when cold then the sensor is faulty. Why is the temperature gauge pinned hot on my Honda? Cut repair costs, not quality. Since you are experiencing no overheating problems the most likely cause is that the engine coolant temperature sending unit is faulty. This sends a signal directly to the dashboard gauge....