* Faulty thermostat: The thermostat is responsible for regulating the flow of coolant through the engine. If it's faulty, it may not be opening properly to allow coolant to circulate, causing the engine to overheat.
* Clogged radiator: Even though you replaced the radiator, it may still be clogged with debris, preventing it from effectively transferring heat.
* Faulty water pump: The water pump is responsible for circulating coolant through the engine. If it's faulty, it may not be able to properly circulate the coolant, causing the engine to overheat.
* Head gasket failure: A head gasket failure can cause coolant to leak into the combustion chambers, causing the engine to overheat.
* Blown head gasket: If the head gasket has blown, it can cause the engine to overheat and coolant to leak into the cylinders.
* Cracked cylinder head: A cracked cylinder head can also cause the engine to overheat and coolant to leak into the cylinders.
* Faulty radiator cap: If the radiator cap isn't sealing properly, it can allow coolant to escape, causing the engine to overheat.
* Low coolant level: Make sure the coolant level in the reservoir is full. If it's low, add more coolant and check for leaks.
