I have a 1992 Toyota Camry. The Temperature gauge is showing low temperature when it should not. The engine is not over heating. Could this be a bad temperature sensor or a stuck open thermostate.

Hi, It could be both. I would recommend bringing the vehicle into a repair shop to have the vehicle properly diagnosed so you are not installing the incorrect part on the vehicle. Both the temperature sensor and a stuck thermostat can cause the same exact concern on the vehicle. Have a great day!

Is the heater output good & warm while driving?