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Low on coolant.

Plugged radiator inside restricting coolant flow.Plugged radiator outside restricting air flow.

Faulty fan clutch.

Faulty electric fans.

Missing or broken fan shroud.

Faulty stuck thermostat.

Thermostat installed backwards.


Give us the year, make and engine info for more suggestions.



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7y ago
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Wiki User

7y ago

There are many possibilities. It could be caused by timing issues, vacuum leaks, faulty fans and a bad water pump.

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