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What are the causes of the Ford Focus hatchback's radiator boiling over?

1 Answers

JadeMarie

07/24/25 8:30am

Ford Focus hatchback radiator boiling over can be caused by the following situations: low water level in the radiator, radiator leakage, poor water circulation, or malfunctioning electric fan. You can avoid this issue by the following methods: 1. Replace the coolant before problems arise to eliminate "boiling over" caused by insufficient or deteriorated coolant. 2. Determine whether the water pump and thermostat are functioning properly. Check if the belt connected to the water pump is too loose and whether there is "slippage" in the belt connected to the water pump when the engine starts normally. 3. When the water temperature rises significantly, the electric fan at the front of the engine will automatically rotate to help the radiator dissipate heat better. If the fan does not rotate or fails to operate at high/low speed, check the wiring, fuse, and relay, and repair them accordingly.

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