What are the causes of a minivan's radiator boiling over?

1 Answers
Marcus
07/29/25 7:50pm
The causes of a minivan's radiator boiling over are: 1. Insufficient water level; 2. Radiator blockage, resulting in poor circulation and backflow; 3. Radiator leakage obstructing water circulation; 4. Abnormal operation of the thermostat's large and small circulation switching; 5. Damage to the cooling fan or short circuit in the wiring causing the fan to stop working, or very slow fan speed; 6. Issues with the fan's water temperature sensor. Additional information: Solutions for a minivan's radiator boiling over are: 1. When the vehicle experiences radiator boiling, promptly pull over to a safe area, keep the engine idling for 3 to 5 minutes, and after the situation eases, turn off the engine and open the hood to cool down; 2. After the engine cools, open the radiator cap, replenish the coolant, and drive the vehicle for inspection to identify and resolve the issue.
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