What Causes High Water Temperature in a Car? What Are the Consequences?

1 Answers
StMackenzie
07/30/25 8:26am
The causes of high water temperature in a car include insufficient coolant, malfunctioning radiator fan, faulty water pump, thermostat failure, cylinder corrosion, and poor radiator cooling. High water temperature can lead to overheating of components such as pistons, cylinder walls, cylinders, and crankshafts, thinning of engine oil and loss of lubrication, burning through the cylinder head gasket, and piston ring scuffing. When encountering a high water temperature warning, first reduce speed, then pull over to the side of the road. Do not rush to turn off the engine. If the engine is shut down at this time, the components are in an expanded state with very small clearances, which can cause some soft metals to detach after shutdown, or even lead to cylinder seizure. After noticing boiling, do not immediately turn off the engine; instead, maintain idle operation temporarily and try to cool it down.
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