There are very different reasons that can cause an engine overheat, but they all have in common three aspects. The three aspects which all engine overheat reasons have in common are that they cause that the heating system can not get rid of heat, they cause a loss of coolant or they directly cause too much heat in the engine system.

One first issue which might be the cause of an engine overheat is a issue with the radiator cap and the pressure it holds. If the radiator cap does not hold pressure correctly then coolant may boil and therefore the engine would overheat. Another reason might be caused by thermostat failures; thus it is recommended that you check it.


The vehicle engine might also overheat due to coolant leaks such as those from the radiator, the hoses, the water pump, the freeze plugs or any other. Also, issues in the water pump could be the cause and therefore you should check it and change it in case it is required.

Some other reasons by which the vehicle engine could overheat are issues in the exhaust system which you can discover by checking vacuum readings, pipes and converter. Additionally, you should also make sure that the radiator hose has not collapsed and the ignition timing is working correctly.

You should equally check the electric cooling fan by making sure that the fan motor, the relay and temperature are correct or otherwise it could make the engine to overheat. Besides this, you should also check the radiator in case there are any debris in it as well as you should check its hose in case it has worn.

It is also advised that you check the antifreeze concentration which should be 50/50 in order to be appropraite, otherwise it could cause the vehicle engine to overheat. If you do not find why your engine does overheat, you should ask a mechanic or an expert for solution. You should not try to fix this if you do not have the proper tools and general car knowledge required for it.