Why is my radiator fan still running after car turned off?

Why is my radiator fan still running after car turned off?

It’s normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool. It’s possible you may have a module or relay failing in your car. Have a mechanic inspect the electrical portion of your cooling system to be sure it’s running correctly.

What would cause a car fan to stay on?

Cooling fans stay on at all times If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.

How do I know if my radiator fan relay is bad?

Bad Cooling Fan Relay Symptoms

  1. The engine runs hot or overheats.
  2. The cooling fans don’t work.
  3. The cooling fans keep running.
  4. Warning lights.
  5. Poor air conditioning performance.
  6. Swapping Relays.
  7. Measuring the Relay Coil’s Resistance.
  8. Listening for Noises.
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How do I know if my fan control module is bad?

Symptoms of a Cooling Fan Module Failure

  1. An overheating engine. When the cooling fan module fails completely, the cooling fans will not work at all.
  2. Cooling fans running non-stop.
  3. Poor circulation of fresh air in the cabin of the car.

Why is your radiator fan not running?

A Bad Fuse. It is a very common problem that results in radiator fan failure: the fuse may burn off or simply fall off.

  • Dead Wires. If you see the engine heating but the radiator fan isn’t,the fan wires could be the culprit.
  • Broken Fan Clutch.
  • Inadequate Coolant Level.
  • Defunct Temperature Sensor.
  • Bad Radiator Fan Motor.
  • What can fan run after the car is shut off?

    If your car uses a blower motor controller, it can keep running the blower motor after you shut down the engine. Those used to be installed only on vehicles with automatic climate control with variable speed fans, but now they’re installed on many late model vehicles.

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    What causes radiator fan to keep running?

    The engine contains a combustion chamber where explosions take place to provide power and heat the car. These explosions cause the engine to heat up extremely quickly and can sometimes lead to overheating. This is a reason why the radiator fan turns on when the car starts.

    Why does your radiator fan keep going on and off?

    low coolant level,

  • faulty coolant temperature sensor,
  • PCM or ECU defective
  • coolant leaks from the water pump,
  • cracked radiator,
  • worn upper or lower radiator hoses,
  • leaky heater core,
  • leaky thermostat housing,
  • rusted coolant bypass pipe,
  • bad radiator fan relay,