What to do if your temp gauge goes to zero?
What to do if your temp gauge goes to zero? Turn the ignition on, but don't start the car. Give what you say above, the temp gauge should read half. Now unplug the sensor. If you have a bad sensor, the gauge will go to zero. the gauge will stay the same. Well the FSM points just like you said to the passenger upper rear for this sensor. What causes the temp gauge to peg Hot? When my car is running, the temp gauge goes and pegs hot, even if the car is cold. I dont know if its a...