Overheating my 2004 Disco is still overheating after replacing the Thermostat and Radiator, The water pump seems to be turning, the fan moves, what else can it be?

I would recommend that you bleed all air out of the cooling system. The bleeder valve is located on top of the engine. Once engine starts to overheat or when you can hear bubbling back into the overflow bottle, turn car off and open bleeder valve. If you see bubbling you have air in your system. Bleed the system a couple of times and see if this helps.A heat sensor sending unit which controls activation of the electric fan could also have failed.But is the heat sensor is properly working then check the radiator cap is it properly fitted or got loose.If its loose it will release the pressure and car will overheat.But if the radiator cap is properly closed.Then its time to check the HEAD GASKET.As you have mostly replaced all the possible faults for overheating and if other mentioned possibilities are checked OK.Then its time to check and replace head gasket. Thanks. you can rate this solution and show your appreciation.

Hi , I had the same trouble with overheating and it ended up being the water pump.