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My Cooling Fan Won’t Stop Running on My Radiator

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Your cooling fan operates through a series of circuits. The computer turns the cooling fan on and off when it receives a temperature indication from the coolant temperature sensor. When the temperature exceeds a specific value — usually 215 degrees Fahrenheit — the computer will turn the fan on. The operating components in the cooling fan circuit include the cooling fan fuse, relay, coolant temperature sensor and the computer. Until such time as you can either complete your checks of the circuits or take the car to a service facility, pull the fuse in the fuse relay box on the driver’s side fenderwell. The fan will discharge the battery quickly if left running.

Step 1

Open the hood and locate the fuse relay box on the driver’s fenderwell. Remove the lid.