What are the reasons for high car water temperature?
2 Answers
The reasons for high car water temperature: 1. Thermostat failure; 2. Cooling fan not working, which could be due to the temperature control switch not opening or the water temperature sensor malfunctioning; 3. Water pump failure, where the impeller slips or gets stuck, causing the belt to break; 4. Insufficient cooling medium, such as low coolant level or radiator leakage; 5. Incorrect ignition timing and high oil pressure, leading to a discrepancy between the water temperature gauge reading and the actual temperature. When cooling down, never pour cold water on the engine, as this may cause the engine block to crack due to sudden cooling. The correct method is: wear gloves, place a multi-folded wet cloth over the radiator cap, gently unscrew the cap a small gap, wait for the steam to slowly escape, and after the radiator pressure drops, add cold water or antifreeze.
I usually commute to work by car, and high engine temperature is quite common. The biggest reason might be insufficient coolant; sometimes the radiator leaks without you even noticing, and the temperature suddenly spikes. A blocked radiator is also an issue—city dust accumulates on the fins, leading to poor heat dissipation. If the fan isn't working, like when the motor fails or there's an electrical fault, heat can't escape, making high-speed driving dangerous. Then there's the thermostat—if it gets stuck in the closed position, coolant can't circulate, and the engine overheats quickly. Once, during a long drive, my engine temperature suddenly shot up, scaring me into pulling over immediately. Upon checking, I found a coolant hose had aged and was leaking. Since then, I've made it a habit to regularly inspect the cooling system—don't wait until it fails to regret it, as engine damage repair costs aren't cheap. Addressing these small issues promptly makes driving much more reassuring.
