Why is the engine hood temperature high?
2 Answers
This is a normal situation. The engine temperature inside the hood is very high, especially after the cooling fan operates, which can easily make the engine hood hot. During hot weather, installing a layer of heat insulation material on the hood can significantly improve the situation. Different design standards: Each vehicle's engine has different design standards for normal operating temperature, but most vehicles' engines operate normally between 90-100 degrees Celsius. Additional information: 1. Replace the coolant: Generally, the engine coolant is replaced based on mileage or time. 2. Reason: It is difficult to determine the degree of deterioration visually. The coolant may appear unchanged, but its internal anti-corrosion properties degrade, which can damage the radiator, pipes, hoses, etc.
A high engine hood temperature may indicate a problem with the cooling system. Last time I encountered this situation, I found that the coolant was too low or leaking. The fan might also not be working, especially after driving in hot weather or at high speeds, as poor heat dissipation can cause the temperature to rise. The inspection method is simple: start the engine and check the coolant reservoir level—if it's low, add more; listen to see if the fan is running—if there's no sound, the relay might be faulty. Additionally, a clogged radiator or aging pipes can also cause this issue. Regular maintenance is crucial, such as cleaning the radiator fins every six months. Safety tip: If the temperature is too hot to touch or the dashboard warning light comes on, pull over immediately and wait for the engine to cool down; otherwise, the engine could be damaged. Timely professional inspection and repair can save money and provide peace of mind.
