Quick question. Just today my temperature gauge is always pointing to high (overheat) in my 1993 Toyota Camry 2.2 4 cylinder. This happens even when I first get in the car and turns the key to on after the engine is cold. Maybe a faulty coolant temp sensor, relay, etc.

 

Figured out that this was the coolant temperature sensor at fault near the thermostat. Took the wire off and the needle dropped to cold. Put the wire back on and it wentback all the way to high. This was with the key turned on and the engine being cold. No short in the wire just a bad sensor at this point.