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What is a symptom of the radiator fan not working?

If your vehicle's radiator fan is not working properly, there are several telltale signs to watch out for. The most common symptom is the engine overheating, which can lead to more serious issues if left unchecked. Understanding these warning signs can help you identify and address the problem before it causes further damage to your car.


Engine Overheating


The primary function of the radiator fan is to draw air through the radiator and cool the engine. When the fan is not working, the engine is unable to dissipate heat effectively, leading to overheating. You may notice the temperature gauge on your dashboard climbing into the red zone or the engine emitting steam from the hood.


Lack of Airflow


Another symptom of a malfunctioning radiator fan is the absence of airflow through the engine bay. You can check this by carefully placing your hand near the front of the vehicle while the engine is running. If you don't feel a strong flow of air, it's a sign that the fan is not functioning correctly.


Intermittent Fan Operation


In some cases, the radiator fan may only work intermittently or at certain engine temperatures. This can be caused by a faulty fan relay, a problem with the fan's electrical connections, or a issue with the fan's temperature sensor. If you notice the fan turning on and off sporadically, it's a clear indication that something is wrong.


Unusual Noises


A malfunctioning radiator fan may also produce unusual noises, such as grinding, squealing, or clicking sounds. These noises can be a sign of a mechanical problem, such as a worn-out bearing or a loose fan blade. If you hear any unusual sounds coming from the engine bay, it's best to have the fan inspected by a qualified mechanic.


If you experience any of these symptoms, it's important to address the issue promptly to prevent further damage to your vehicle's engine. Ignoring a faulty radiator fan can lead to costly repairs, so it's best to have the problem diagnosed and repaired as soon as possible.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.