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What would make a 1999 olds alero keep running hot?

* Low coolant level: If the coolant level is low, the engine will not be able to circulate enough coolant to keep it cool. Check the coolant level and add more if necessary.

* Coolant leak: A coolant leak can also cause the engine to run hot. Look for any leaks in the hoses, radiator, or water pump.

* Faulty thermostat: A faulty thermostat can prevent the coolant from flowing properly through the engine. Test the thermostat by placing it in a pot of boiling water. If the thermostat does not open, it is faulty and should be replaced.

* Radiator blockage: A blockage in the radiator can prevent the coolant from flowing properly through the engine. Check the radiator for any obstructions, such as leaves or debris.

* Faulty water pump: A faulty water pump will not be able to circulate the coolant properly through the engine. Check the water pump for any leaks or damage.

* Head gasket failure: A head gasket failure can cause the coolant to leak into the combustion chambers. This can cause the engine to overheat and run rough. If you suspect a head gasket failure, have the engine inspected by a qualified mechanic.