Have you ever encountered such a situation, the engine water temperature and oil temperature are obviously good in winter, but there is a problem in summer, and the water temperature pointer goes straight to the red area. Yes, this problem is not uncommon. We can always see various videos of high water temperature and even boiling.
Obviously, this is a problem with the engine cooling system. Sometimes the problem is not big, but it is very annoying. What is the reason?
1. Thermostat failure:
From the above heat dissipation principle, we can see that the thermostat plays an important role in controlling the large and small cycles according to the water temperature. In fact, it is a bit similar to a temperature control valve. Therefore, once the thermostat is stuck or broken, it will cause abnormal large and small cycles, and the engine heat cannot be effectively released through the large and small cycles, which will eventually lead to high vehicle water temperature.
In layman’s terms, the failure of the thermostat will cause the engine water temperature to be not hot when it should be hot, and not cold when it should be cold. Such heat dissipation problems are expected.
2. Lack of coolant:
As an important part of the engine cooling cycle, coolant will be slowly consumed during the long-term cooling cycle of the engine. If the coolant is insufficient, the heat taken away will naturally be reduced.
In addition, if water with impurities is used as coolant for a long time, scale will be generated in the water tank, which will indirectly cause the thermostat to get stuck and increase the flow resistance, and finally reduce the flow efficiency of the coolant inside the water tank, thus affecting the entire cooling system.
3. Too much debris on the surface of the water tank radiator:
After the vehicle has been running for a long time, impurities such as catkins, mosquitoes, and dust will continue to accumulate on the water tank radiator. Once accumulated too much, the water tank radiator will be blocked by debris, and the air intake and heat exchange will be greatly reduced, thereby reducing the cooling effect and causing the water temperature to be too high.
After analyzing the cause, of course, the right medicine should be prescribed, so that the disease can be cured.
Usually, when the engine frequently has too high water temperature, you can check the thermostat at this time. The usual practice is to remove the thermostat and boil water to determine the opening status of the main and auxiliary valves. If the thermostat cannot be opened normally at 80-90 degrees, it needs to be replaced in time.
We can also check the vehicle cooling system frequently, such as observing the remaining capacity of the coolant. If the coolant level is found to be lower than the lowest scale line, it needs to be replenished in time. The old method of using water as coolant does not work. In addition, keep the surface of the water tank radiator clean. If there are impurities, we still remember to clean it in time.
The above measures and suggestions are for the convenience of daily maintenance. If there is a problem, it is recommended to contact the maintenance personnel of the service station. Don’t mess around by yourself. After all, the engine is very expensive now. If it is broken, it is a huge loss.
In fact, the cooling and heat dissipation system of the engine is a very complex and sophisticated system. It is a water pump, radiator, cooling fan, thermostat, coolant and many sensors that work together to make the engine work in the best working range. Generally, when problems occur, do not use the old methods on the new technology. It may not work. The vehicle still needs to be checked and maintained frequently.
If your truck needs to replace a new engine and related engine spare parts (water pump, radiator, cooling fan, thermostat, sensor, etc.) recently, you can contact us. We provide spare parts for different models and engineering machinery products. We look forward to your consultation!
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Post time: Jul-28-2025