What make the water run hot when the water pump work and the radiator is ok and the hoses

check the electric cooling fan, make sure the radiator is blocked w debris (wash w hose) proper amt of coolant. Make sure both hoses (upper & lower are same temps) Possible circulation,(water pump or clogged rad if all else is well) Any leaks?

The temperature switch on the side of the upper radiator hose is not working. That is, if the engine is hot. Boiling over - need to check thermostat. Grab on to upper hose (should be hot) than with engine off, grab bottom radiator hose. It also should be same temperature as top. If so, thermostat ok. Electric radiator fan - turn Ac on. Fans should run. No, check fuses & relay. Mechanical fan - with engine off, the blade should be stiff to turn. Easy, replace fan clutch. Usually, low level of water is most common. Wish you well.

If you have a viscous fan hub then have it replaced as it is not moving the air through the radiator. Check how you placed the thermostat in the system as the bulb bit faces into the head or block so that it can sense the rising water temperature and open as required.. With not water moving through the hose I suspect that may be your problem

Maybe your radiator is clogged.

you could have an air lock would bleed heater hoses

Check first your coolant level. Start engine and turn on ac open hood see if cooling fans are running, if fans are running and coolant level is ok temperature should stay normal. If temperature rises squeeze coolant hose, it should be firm like you could feel pressure on the hose a sign that the water pump is good. Thermostat opens only when coolant reach normal operating temperature.

Ok well there are a number of possibilities. One to keep in mind is that some water pumps are really cheap and the fins will corrode and rust off leaving nothing behind to actually pump the water. If the pump really is working fine then there are two more possibilities. 1 the radiator is clogged, 2. there may be a head gasket leak. 3. you are sure your gauge is working right? 4. you didnt say what year or kind of car it is.. Is the electric fan working? When the engine is overheating, are both upper and lower radiator hoses hot? If the water pump or the thermostat are failing the upper radiator hose can be hot while the lower can still be relativly cool. If the radiator is plugged or the fan isnt working then both hoses can be Hot. There is also a remote possibility that water passages in the head gasket could be plugged.

OK you have done the engine side of things. If you have an electric radiator cooling fan make sure it comes on when radiator is hot, if not the fan motor is caned or the thermostat switch is faulty. Sometimes the fan motor is supplied by a fused/relayed circuit in which case these items will also need to be checked. Check that not only does the top hose from the engine to radiator get hot but that the bottom one does too. If not this would indicate a blockage perhaps in the radiator core due to sludge. If full of sludge give both ends a flush out with a high pressure hose. Like wise do the same with the bottom hose back to the pump. If the water is circulating and the radiator fan is working then the normal cooling system is working as it should. f the engine is running hot one last thing is to find the EGR valve and check that it is opening as it should. If not the combustion temperatures go very high. One indicator of a hot engine is blue/glazed spark plugs so take one out and check it for signs of hot running. If hot then look to clean the EGR valve and associated exhaust gas feeder pipe with frayed cable, cloth and and carb cleaner spray.

Probably not water pump. Engine is notourious for vapour lock.
Cooling system must be blead of air before thermostat will work. Cool bottom rad hose is a dead give away. If you are still watching this forum reply , and I will walk you through the only way I know how to make it work properly. It's actually easy if you do it my way. I have worked on lots of cars , and this engine was the hardest to bleed out. Did one Yesterday , and works perfect.

Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?