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If your radiator isnt leaking and car is having a over heating problem and coolant spewing out. Chances are your thermostat needs replaced. possible the radiator needs to be flushed. But more likley its thermostat
Low coolant? System air bound? Hoses collapsing under pressure? Water pump not circulating coolant?
form_title=Replace the Coolant Fluids form_header=The fluids in the cooling system need to be replaced regularly. When was the last time you go your coolant flushed?=_ If the thermostat needs to be replaced, would you like me to install a new one?= () Yes () No Have you noticed any leaks in your radiator?= () Yes () No
The defrost is cooing your coolant by circulating the fluids through the heater core. Check the water pump to insure that its pumping and check the radiator for blockages in the fins. Also check for an air bubble that can happen when a thermostat is replaced.
change your thermostat.
System airbound? Coolant level? Temperature control cable?
There could be many reasons. Not enough coolant or bad flow, faulty thermostat, low oil. If the coolant freezes then it will overheat. If your car continues to overheat then you should have the coolant flushed and thermostat replaced.
Water pump defective.
It could be one of many things.......radiator fans notworking/low on coolant/stuck thermostat/ radiator may need to be flushed......
did you use the right anti-freeze or you may have a bad fan/fan switch
cooling system needs flushed out and a new thermostat installed, also if the radiator is still original it probably needs replaced or rodded out.
Could be your electric fan on the radiator is shot, or the relay is bad.