What are the reasons for high water temperature in a car?
2 Answers
The main reasons for high water temperature in a car are as follows: 1. Insufficient coolant: Coolant leakage or low coolant levels can cause the engine water temperature to rise. It is necessary to check the coolant condition. If it is insufficient, first add it to the appropriate level, then check after a few days to see if the level has dropped significantly. 2. Cooling fan malfunction: When the vehicle is running at high speeds, the generated heat cannot be transferred to the antifreeze in time, affecting heat dissipation, which then leads to an increase in antifreeze temperature and issues like boiling over. 3. Circulation water pump failure: Water pump failures include bearing seizure and impeller damage. Bearing seizure is relatively rare, while impeller damage commonly involves impeller cracking or detachment from the pump shaft, resulting in slower coolant circulation and easily causing engine overheating issues.
I've been driving for over a decade and frequently encounter the issue of rapidly rising water temperature, which is no trivial matter. High water temperature usually indicates a problem with the cooling system, most commonly due to insufficient coolant or a leak. Think of coolant as the engine's blood—it's responsible for dissipating heat. If there's not enough, the temperature will shoot up. Another possibility is a stuck thermostat, which controls the flow of coolant. If it gets stuck in the closed position, heat can't escape, leading to overheating. The fan is also a critical component. If there's an electrical issue or the fan motor fails, the temperature can spiral out of control in traffic. A malfunctioning water pump or a loose belt preventing the pump from turning can also disrupt circulation. Last time, my radiator was clogged with dust, drastically reducing cooling efficiency, but it worked fine after cleaning. I recommend regularly checking fluid levels and performing routine maintenance—don't wait until the temperature warning light comes on to take action, or you might end up damaging the engine.
