Car overheating: causes and short-term solutions

Engine overheating occurs not only in summer, but can also occur during daily driving. In particular, cars, engines and air-conditioning systems running at high speed may cause boiling phenomenon when the water temperature is too high. It is dangerous to overheat the engine. It may be bad luck which can damage the engine. When driving on highways at higher speeds, or getting into a car, if the pointer of the water temperature gauge enters the red zone and remains high, appropriate action should be taken at this time. Here’s how to handle engine overheating.

There are many causes of overheating, including insufficient coolant, cooling fan failing coolant, thermostat failure, and coolant temperature sensor failure. If you handle it incorrectly, it can lead to costly engine failure. Therefore, timely detection and proper elimination of overheating can effectively reduce losses.

What is the effect of engine overheating on the engine?

1. Reduced aeration efficiency, resulting in a drop in engine power.

2. Increases the propensity for pre-ignition and deflagration, which disrupts the normal operation of the engine; at the same time, it also causes premature damage due to the additional shock loads on the parts.

3. The normal space of the moving parts is destroyed, so that the parts cannot move normally or even be damaged.

4. The mechanical properties of the metallic material are reduced, causing damage due to deformation of the part.

5. The deterioration of the lubrication condition exacerbates the friction and wear of the parts.

How does motor overheating occur?

First, poor engine cooling: Poor engine cooling can cause the temperature of the water in the tank to be too high. The more the water tank is used, the more internal scale will accumulate, resulting in poor heat dissipation in the radiator. Water with too high a temperature will not release heat and will turn into a “frying pan”. In addition, the radiator vent hole is also a common cause of poor heat dissipation. If the external blockage is not ventilated, use a water gun to clean it. If the inside of the radiator is blocked, clean it with a cleaning solution.
Secondly, the cooling system does not work properly, which leads to poor heat dissipation. At this time, check the fan belt tension and whether the fan blades are warped or broken.

Third, the thermostat automatically adjusts the amount of water entering the radiator according to the cooling water temperature, to ensure that the engine runs within a suitable temperature range, which can play a role in saving energy. energy consumption. If the engine overheats, check that the thermostat is working properly. Starts at 70°C and fully opens at 83°C. When the fully open valve height is not less than 9mm, the thermostat can be put into the water for heating inspection. If the thermostat cannot be opened or the opening degree is not enough, the thermostat must be replaced.

Finally, be careful not to turn off the engine when it is overheated. If the fan belt and coolant circulation are normal, do not turn off the engine and wait for it to cool down. Normally, people tend to feel that the engine cools down easier after the flame goes out. Actually, after cooling down, the cooling fan and coolant circulation will stop, which will make the engine hotter. There are two coil fans on the bumper side of the engine compartment. One is a cooling fan that cools the engine while the engine is running, and the other is an air conditioning fan that is used when the air conditioning is on. Therefore, if the fan belt does not break when the car overheats, it is better not to turn off the engine, but also to turn on the air conditioner at the same time, so that the engine cooling rate is faster.