Since you mention flushing the system, you could have big air pocket in the cooling system. Each time you run it, let it cool down then check the level in the radiator, not just the overflow tank. Also the thermostat could be in backward, or a faulty one (even though it's new) Never open a radiator cap if it is HOT! Those would be the first two places to look.
On a 2000 Ford Ranger , 4.0 liter EFI , V6 engine : Follow the top radiator hose from the radiator , it connects to a metal pipe which is part of the engine cooling thermostat housing The engine cooling thermostat is inside the housing that is bolted to the front of the engine
some cooling systems, you can check by removing the radiator cap when the water is cool. Then crank the vehicle and let it run until it reaches operating temp. If the water reaches or exceeds operating temp with no flow seen inside of the radiator, it could possible mean that your cooling system is clogged. Also a good indication is if there is rust deposits around the filler neck on the radiator.
till the radiator and the block is full and the cooling system is at operating temp
Dirty or plugged radiator Water pump Defective radiator cap Thermostat Cooling fan not operating hoses collapsing
Not enough coolant in the cooling system - Improper ratio of coolant to water in the system - Improper or failing radiator pressure cap - Cooling system water pump may be failing - Radiator fins may be dirty or blocked. - radiator cooling fans are not operating correctly - cooling system is dirty and may need flushing.
Radiator plugged or restricted? Cooling system airbound? Water pump not circulating coolant? Radiator cap defective? Radiator hoses collapsing under pressure? Defective gauge/cooling temperature sensor?
Low coolant level? Cooling system air bound? Water pump not circulating coolant? Cooling fan not operating? Radiator plugged or restricted?
The radiator fan will start to work once your engine reaches a certain operating temperature.
It depends on what kind of car and what year. if it has cooling fans, they can be not operating.
Type your answer here... IF WE CHANGED ONLY COOLING FAN THEN IT WILL BE OVERHEAT BECAUSE WE DON'T CHANGE OR FLUSHING OF RADIATOR. WE CAN REMOVE THERMOSTAT VALVE ALSO MAY BE HOSE PIPE WILL BE BEND
Temp sensor not working, cooling fan not working, blown head gasket.
Stuck thermostat, clogged radiator.