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What Causes Sudden Overheating in a Car?

1 Answers

DelilahLynn

07/29/25 6:16pm

The reasons for sudden overheating in a car include insufficient coolant and malfunctioning radiator fans. Below are detailed explanations of these causes: 1. Insufficient Coolant: Leakage or lack of coolant can lead to the engine overheating or boiling. The engine's cooling primarily relies on the continuous circulation of coolant, which carries away internal heat and dissipates it through the radiator. A shortage of coolant means a lack of cooling medium, inevitably causing the water temperature to rise. 2. Radiator Fan Malfunction: When the vehicle operates at high speeds, the engine generates a large amount of heat, which is transferred to the radiator (cooling grid) via the coolant. In addition to natural airflow cooling the radiator while driving, the radiator fan plays a crucial role in dissipating heat from the radiator. If the electric fan is damaged and stops working, it can lead to an increase in coolant temperature, resulting in overheating or boiling.

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