Fan Belt Noise When Accelerating, What＇s Wrong?

When you are driving, suddenly you hear a roaring sound inside the car, which is likely caused by the noise from the fan belt. In some cases, this noise may be temporary, but in other cases, it may persist and become increasingly severe. In this article, we will explore the fan belt noise when accelerating and discuss how to solve this problem.

The fan belt is a part of the engine that helps drive the generator, water pump, and other systems. If there is a problem with the fan belt, it may cause engine failure, which can seriously affect the performance and safety of the vehicle. 

Fan belt noise when accelerating

1. Fan belt aging or damage

Long term use or use of fan belts under harsh conditions may cause them to age or be damaged. These factors include high temperature, prolonged non use, oil contamination or damage. When the fan belt ages or is damaged, it will make noise and may break after a period of time.

2. Loose fan belt

Loose fan belts may cause friction and generate noise during operation. The loose fan belt may not be able to drive the operation of the relevant systems, leading to performance issues in the car.

3. Incorrect installation of fan belt

If the fan belt is not installed correctly, it may rub and produce noise during operation. The fan belt may not be fully connected to the relevant system, which may lead to performance issues in the car.

4. Fan wheel or pulley failure

A malfunction of the fan pulley or belt pulley may cause noise from the fan belt. A faulty fan or pulley may cause the belt to not run smoothly, resulting in noise or damage.

How to solve the problem of fan belt noise?

If you hear noise from the fan belt during acceleration, you need to take the following actions to solve the problem:

1. Check the fan belt

Firstly, check the fan belt for obvious aging, damage, or looseness. If there is a problem, it is necessary to replace the fan belt. Before replacing, you need to check your car manual to determine the type and specification of belt you need to use.

2. Adjusting the tightness of the fan belt

If the fan belt is not aging or damaged, but is loose, then you need to adjust its tightness. This can be achieved by rotating the adjustment bolt on the fan pulley. After adjustment, start the car again and check for any further noise.

3. Check if the fan belt is installed correctly

If the fan belt is not aged or damaged, and there is no looseness, then you need to check if it is installed correctly. You can check the car manual or online tutorial to ensure that the fan belt is correctly connected to the relevant system and there is no looseness.

4. Check the fan or pulley

If the fan belt is not aged or damaged, nor is it loose, and has been installed correctly, but still emits noise, then you need to check if there is a fault with the fan wheel or belt pulley. This requires careful inspection of the wheels for damage or looseness, and corresponding repairs or replacements.

When you hear noise from the fan belt during acceleration, you need to check whether the fan belt is aging, damaged, or loose. If there is a problem, you need to replace or adjust the belt in a timely manner. If there are no issues with the fan belt, then you need to ensure that it is correctly connected to the relevant system and check if the fan or belt pulley is malfunctioning. By taking the correct maintenance measures, you can ensure that your car maintains normal operation while driving and is not disturbed by fan belt noise issues.