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on most vehicles the radiator fan is wired up to a relay so that the fan will remain off until the car is warmed up. they do this so your car will warm up to NOT (normal operating temperture) faster. if you are good with wiring you could wire the fan up to a switch so you can turn it on or off when needed.

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13y ago
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Q: What would cause radiator fan to constantly click on and off?
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