What are the main reasons for high engine temperature in cars?
2 Answers
The main reasons for high engine temperature in cars are: 1. The fan motor is not working or the fan clutch is faulty; 2. The three-way catalytic converter is blocked or the pipe is broken; 3. The pipes in the cooling system are broken; 4. The water pump, which has been used for a long time, has worn out parts after severe wear; 5. The pressure of the radiator cap is unstable, causing the spring to loosen and the cap opening cannot be tightly closed. The solutions for high engine temperature in cars are: 1. Open the radiator cap, start the engine, and observe whether there is a rolling phenomenon in the water in the radiator; 2. Remove the thermostat and check it; 3. Check whether the surface of the radiator is blocked; 4. Check the fan belt to see if the tightness is normal.
I found that most cases of high engine temperature in cars are caused by cooling system issues. Insufficient or leaking coolant can lead to inadequate engine cooling, causing the temperature to rise rapidly. If the water pump fails and stops working, the coolant won't circulate, and heat can't be dissipated. When the radiator's exterior is clogged by insects or leaves, or its interior accumulates scale, its efficiency is greatly reduced. If the fan stops working, especially in traffic jams, heat cannot be effectively expelled. Poor-quality or insufficient engine oil increases friction, creating more heat-related risks. A stuck thermostat in the closed position prevents coolant flow, directly causing overheating. A damaged cylinder head gasket is even more serious, as combustion gases can mix into the cooling system, increasing pressure. Excessive load, such as towing heavy objects or driving at high speeds, can also increase the burden. I recommend regularly checking the coolant level and color, keeping the radiator clean, changing the engine oil on time, and immediately stopping to inspect the engine if a high-temperature warning appears to prevent damage. This can save a lot on repair costs!
