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Q: Sporadically overheats , have replaced water pump and radiator hoses and thermostat. What else could cause the overheating?

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Sporadically overheats, have replaced water pump and radiator hoses and thermostat. What else could cause the overheating?

My car has 200000 miles.
My car has an automatic transmission.

A: It is possible that you have air in the sys...

It is possible that you have air in the system or that air is somehow being pulled into the system. A very small gasket leak can sometimes not be enough for liquid to leak but will allow air to enter the system when the water pump pulls a slight vacuum during circulation. Also make sure all of the hoses are tight and that the reservoir tank is full. A leaking radiator cap can sometimes cause this as well. If you are still having trouble, I suggest having a certified technician, like one from YourMechanic, determine the exact cause of your overheating concern.

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