Car runs hot after repairing, water pump, themostat, water outlet, coolant flush. What else can cause the thermostat gauge to move?

While it doesn't seem likely, if you've changed, or had the thermostat changed.... I'd say you got a faulty thermostat. I am curious as to what your temperature gauge says the temperature of the engine and coolant is.. If your gauge is showing hot, I can think of two more possibilities... the water pump isn't pumping right... and, if the water pump isn't working right, the problem can be a cracked head or block, which can cause an airlock in the coolant system. Check the coolant or radiator cap.

May be a defective thermostat or place in the wrong direction. If it's properly installed, might want to check the fan operation which may be producing the overheating.
If fan is good, one way to remove air in the coolant system is to run vehicle while all heaters on. take extra coolant and stop along the way to top off if needed. While driving, keep listening for the fan to begin running when vehicle reaches high temperatures.
If you continue to experience overheating, may want to take to a local known repair shop for further troubleshooting.

The most common overlook thing is you got a air pocket, so before you go spend your money turn Heather on full blast, open the radiator cap, car running look for air bubbles, takes patience cause you got to wait for the thermostat to open up, you must refill the coolant really really slow snail pace, some car have a bleeding valve others have two chamber on the overflow bottle,good luck, if that doesn't work change the thermostat first and if that doesn't work I'm afraid you may need to replace water pump. . water pump

A radiator flush should be done every two years. But, I guess you've done this since you said you needed a solution other than a flush. The way your gauge acts leads me to believe you have an air bubble in the system. It'll have to be bled out. With the engine cold, remove the radiator cap and fill the radiator with the proper coolant mix. Start the engine and let it idle. Turn the head wide open. The engine should start to warm up and when the thermostat opens, the level in the radiator will drop. Keep the radiator full while the engine is running. The air should be pushed out of the open radiator and it could cause coolant to come out with some force so don't get your face close to the opening. After 15 minutes the engine should be properly warmed up and most if not all of the air should be out of it. You should also be getting hot air from the heater vents.

When you first start the engine you should be able to see the coolant moving as the water pump is working. If you don't get any movement then you may be looking at a bad water pump.

is the thermostat in the right way is the first question
iot will not open if the body of the thermostat is not in the head water or block water

When your temperature gauge reaches "H' it may too late to prevent a major breakdown. Knowing the symptoms of an overheated car and how they occur may be the difference between being inconvenienced and incapacitated.
Identification:---Other than a low oil level or low oil pressure light, there is not a more significant part of a car's instrumentation than a rising temperature gauge or a glowing "Hot" light. These lights are really the only confirmation a driver has that his car is really overheating. It is the identification of the symptoms of an overheating car that enable the motorist to avert a badly damaged engine. Overheating is always a traumatic event for a car's engine, which makes the early identification of the symptom an important addition to the informed motorist's tool kit.
Stuck Thermostat:--The car's thermostat is a valve that controls coolant flow from the engine block to the radiator. When the engine is cold the thermostat remains closed so that the coolant can reach operating temperature quicker and also provide heat to the passenger's compartment. The thermostat has a spring on it that moves depending on coolant temperature causing the thermostat to open. Sometimes the thermostat fails to open thus restricting coolant flow to the radiator where it would be cooled down. This condition is often the cause of overheating. The symptoms of this cause would be a rising temperature gauge and possibly the loss of heat inside the car.
Restricted Radiator:---A car's radiator will have thousands of gallons of coolant passing through in its lifetime. Along with the coolant comes particulate matter in the form of corrosion breaking loose from various parts of the car's cooling system. These contaminates collect in the tubes of the radiator reducing its efficiency. Extensive "plugging" in the radiator will cause the car to overheat. The symptom of this condition would be a rising temperature gauge which goes up when you accelerate.
Coolant Loss:--A car's cooling system is a closed loop system. You are not supposed to lose coolant. Sufficient coolant loss will cause the engine to run hot because engine is heating less coolant to higher temperatures. The symptom of overheating induced by coolant loss would be a pool of coolant on the pavement when the leak is external. Steam under the hood as the lost coolant hits hot parts of the engine, or a rising temperature gauge in the case of a undetectable engine related leak. Of course, the gauge would also go up if the leaks were not detected. Deteriorated Water Pump:--Cars use a belt driven pump to push the water and coolant mixture through the cooling system. This part is called the water pump. Rarely the impeller that draws the coolant through the pump will rust away making it impossible to push any through the system. If this occurs the temperature gauge will climb and coolant will boil over in the radiator. Inoperable Fan:----Most cooling fans are electrically driven. Some are driven by fan belts. If a belt breaks or the electric supply to the fan is interrupted overheating may result. Electric fans are tuned on thermostatically when needed. When the car runs at idle for extended periods or the weather is extremely hot, a failed fan will cause overheating otherwise it serves as a standby assist to the rest of the cooling system. In stress conditions an inoperable fan will cause the temperature gauge to rise. This will help. Thanks please keep updated.please please do rate the solution positively .thank you for using fixya

if temp. gauge goes up above normal you need to first check the coolant level in the overflow tank. if at normal spot ( car not using any of it). your themostat is bad.

typically that is caused from a bad head gasket, fluid from the engine will be forces through the radiator then boils over or bubbles. As far at the no gauge reading, you probably need a new one.

Could be:

1. Faulty thermostat
2. Intermittent blockage in the cooling system which is retarding the coolant flow
3. Faulty water pump.
4. Any combination of the above.

Action.
1. Don't drive the vehicle in this condition - except to get it to the nearest repair shop. Running in this condition may cause expensive engine damage - such as a cracked head - from overheating which could cost more to repair than the car is worth.

2. (a)Have the entire cooling system flushed thoroughly. At the same time replace the thermostat with the correct new factory item.

(b)Whilst this is being done have the water pump removed and inspected. It may also be on it's last legs and require replacement. If it needs replacing you have no choice but to do this work as your engine is history if running on a worn out or corroded water pump.

If you cannot do this work yourself then entrust it to a quality automotive repair shop.

Ensure the correct coolant is used in the cooling system when re-filling (refer manufacturer spec) and ensure the system is bled of all air. If it is not bled of air after re-filling you will end up with poor coolant flow, hot spots and potential engine damage.

If your system needs topping up from time to time make sure you use the correct coolant for the vehicle.

Check the water pump.I have seen the impellers corode off.Also check for factory recalls on this vechicle.