What Causes the Car Fan to Keep Running When the Air Conditioner is On?

[DelLuke]

Water temperature sensor issues, thermostat problems, high engine temperature, or lack of antifreeze can cause this. Car fans are generally used to cool the radiator. Depending on the model, economy cars usually have one large fan, while luxury models typically feature two smaller fans. In luxury cars, the fans cool the radiator, while the air conditioning condenser is placed in front of the radiator. Here are some solutions for a non-functioning car fan: 1. Solution One: Check if the water temperature relay is faulty—replace it if there's poor contact or no response. 2. Solution Two: A faulty temperature control switch may prevent the fan from receiving power when the engine is hot. 3. Solution Three: The fan itself may be damaged due to overload or short-circuiting—simply replace it with a new one. 4. Solution Four: Wiring issues, such as short circuits or breaks, can cause the fan to stop working. Carefully inspect the wiring, as temperature regulation is crucial for the engine.