SOURCE: coolant temp below thermostat regulating temp
more than likely the thermostat has stuck open. Or opening to soon not allowing the car to reach normal operating temperature. I would start by replacing the thermostat. Clearing the code and running a drive cycle and see if the code comes back. if the code does not return problem solved. if it does return replace the coolant temp sensor.
SOURCE: Overheating
maybe 3 things....leaking intake manifold gasket(very common on this car because pontiac used plastic manifold gaskets) may also be air in the system....bleed screw is located on the top hose and is painted blue. it may have some air cavitation. you may have a leaky or bad seal on overflow cap. check your oil dip stick...if there is a milk shake type foam look to it then the gaskets are ready to fail. get a compression test done and it will confirm everything the easy way. harbor freight sells a radiator pressure test kit and it works like a champ and its cheap....good luck
SOURCE: 97 Cavalier engine coolant light.
have you changed the sensor on the coolant reservoir? try that.
SOURCE: temperature gauge is getting hot have changed thermostat
Hello.
The air release valve is a black plastic screw by the coolant refill cap, if you unscrew this slightly after you've driven the car, it will release any air if it has any (be careful of the steam). If this solves your problem you're very lucky. I think it's most likely your water pump needs reeplacing. I would suggest getting this solved asap as there is a very real danger you can get your engine head damaged if the temp keeps going beyond the normal.
SOURCE: OBD-II Trouble code P0125-Insufficient Coolant
Whenever i get this code i like to clear it and see if it returns. Sometimes in extreme cold weather conditions it will set this code and there may not be anything wrong. What motor is in your celica?
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