How to Replace a Radiator Fan Motor


Electric radiator fan motors are used to increase air flow through the radiator when the car is stationary or moving at low speeds. These fans are also used when the air conditioner is running. This is because increased use of the air conditioner increases the amount of heat the engine produces. This puts an increased load on the engine cooling system. Over time, these fans will burn out and must be replaced. Replacing a fan usually takes no more than two hours.

Things You'll Need

  • Socket wrenches
  • Screwdriver
  • New fan
  • Disconnect the negative battery cable attached to the battery.

  • Unplug the wire socket from the radiator fan. Unscrew, and remove, the four bolts holding the fan and fan shroud in place. The shroud is the large plastic piece the fan is attached to that covers the back side of the radiator. It is used to direct air through the radiator.

  • Pull the fan and shroud out of the engine bay. Remove the bolts holding the fan to the shroud, and remove the old fan. Insert the new fan into the shroud, and reinstall the screws. Tighten the screws, so the new fan is secured to the shroud.

  • Lower the shroud and fan unit back down into the engine bay. Reinstall the screws, which connect the shroud to the radiator. Tighten the screws, and make sure the shroud is secure. Plug the fan wiring harness back into fan.

  • Reconnect the negative battery cable to the negative battery post. Start the engine, and turn the air conditioner on. The fan should turn on.

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  • Photo Credit Hemera Technologies/ Images
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