TEMP GAUGE GOES TO HOT ON IGNITION TURN ON WEATHER COLD OR NOT.Sounds like you have an issue with the gauge, sensor or wiring in between. If you could be so kind as to provide the year of the vehicle we could provide you with a wiring diagram.Related QuestionsTemp gauge reading hot 98 Ford ExplorerSo the other day the temp gauge was reading hot. So I refilled the radiator with what must have been almost the full amount of water. Around 3 or 4 gallons at least if I had to guess. The car was running fine and dandy…subaru temp gauge stuck on highWe have replaced the sensor twice and replaced the coolant. \u00a0It does it even when we first start the car up.RUNNING HOTI have a 94 Cadillac Seville SLS that was running hot so I took out the thermostat but it is still running hot is it the water pump or a blown head gasket?