What Causes High Engine Temperature Alarm?

[SanClaire]

Reasons for high engine temperature alarm: Insufficient coolant: Possible causes include insufficient engine coolant, faulty water temperature sensor or gauge, and prolonged low-speed, high-load driving during hot seasons, which can also lead to high temperatures. Overheating: When encountering a high water temperature alarm, first reduce speed and pull over to the roadside. Do not rush to turn off the engine, as excessive heat can cause components like pistons, cylinder walls, and the crankshaft to overheat, thinning the oil and reducing lubrication. Engine seizure: If the engine is turned off at this point, the parts are still in an expanded state with minimal clearance between them. Shutting down can cause soft metals to detach, and in severe cases, lead to engine seizure. Therefore, after noticing overheating, do not immediately turn off the engine; instead, keep it idling to cool down as much as possible. Blockage: When cooling, avoid splashing cold water on the engine to prevent sudden thermal contraction and potential blockage. The correct method is to wear gloves, place a folded wet cloth over the radiator cap, and gently loosen it slightly to allow steam to escape slowly. Once the radiator pressure drops, add cool water or antifreeze.