Why is my new water pump still overheating?
Why is my new water pump still overheating? Replaced water pump, radiator and thermostat car is still... Q: Replaced water pump, radiator and thermostat car is still overheating. What can it be? Changed water pump, radiator and thermostat. Car still overheating it has a leak in the headers and i am getting that replaced too. Why is my water pump and thermostat not working? The radiator, water pump, and thermostat are definite possibilities, but there are a few others that are possible also. A faulty cooling fan is the first thing that comes to mind, but it could also be...