* Blown head gasket. A blown head gasket can cause the engine to overheat and can also prevent the engine from starting.
* Warped cylinder head. A warped cylinder head can also cause the engine to overheat and can also prevent the engine from starting.
* Seized engine. If the engine overheated severely, it may have caused the engine to seize, which would prevent the engine from starting.
* Faulty coolant temperature sensor. A faulty coolant temperature sensor can cause the engine to overheat because the sensor will not be able to accurately measure the temperature of the coolant. This can cause the engine to run too hot and eventually overheat.
* Low coolant level. A low coolant level can cause the engine to overheat because there will not be enough coolant to circulate through the engine and absorb heat. This can cause the engine to run too hot and eventually overheat.
A mechanic will need to inspect the engine and diagnose the specific cause of the problem in order to recommend the correct repair.
