You may already know this, but the alternator is an essential part of an engine. He is the one who is responsible for changing energy of the engine block of this volvo v40 in Electricity supply so as to recharge the battery. If there is a problem, it can mainly cause electrical failures. It therefore seems essential to deal with it. Only, the problem can mainly come from the belt, sometimes pulleys. We will see through this article where the problems according to the noise that you hear.noise-alternator-volvo-v40

Alternator belt noise on a Volvo V40

La alternator belt, also called accessory belt, proves to be the essential element which contributes to the proper functioning of the alternator. It is this one which by its convolution drives the alternator and will give the means to manufacture electricity. However, it also serves to rotate different pumps of the engine block. In the event that it breaks, it can cause damages pretty serious in the engine of the volvo v40.

A metallic noise on the Volvo V40:

This is a noise that generally comes Cold. The most common reason is that the streaks in the belt have deteriorated. However it can also happen as soon as the pulley is a little off-center. If the belt gets damaged it can naturally break. If you recognize this noise, the ideal is to replace the belt and the problem will be solved almost every time.

A sharp squeal on the Volvo V40:

This is the most common problem, as well as the least serious. It often comes from cold, but will sometimes even come back hot from time to time. However, it stops instantly. This problem usually arises when the accessory belt is slack. All you need is tighten and voila. Be careful, when it remains in this situation for too long, the belt may deteriorate and cause more serious concern over time. This sharp screeching also sometimes occurs when the damper pulley is damaged, but it is more rare.

A slight hiss or breath on the Volvo V40:

It is the opposite of the previous problem. Your belt is certainly excessively tight or too small. You can imagine what you are going to have to do!

Alternator noise on a Volvo V40

In the case where it is the alternator which produces this noise and not your belt, in this case the malfunctions will be really divergent. However, this noise you hear may have similarities to that of a strap, so a high hiss. The concern will sometimes come from a electrical failure, it's pretty ordinary. In case the voltage essential to the good activity of the volvo v40 is usually weak, it is usually seen in the lack of power of the lights or lights inside the vehicle. In case the lack of power is unusual, it happens that the battery indicator stays in operation. In order to make a good diagnostic worry, it is possible to use a voltmeter and probe the tension via the plus and the - of the battery, with the engine running of course. If the voltage turns out to be lower than that recommended by the battery, the problem could therefore come from the alternator. So it usually needs to be replaced.

Conclusion:

A new alternator noise generally comes from the alternator belt, but will sometimes also come from the alternator itself. Economically, the alternator belt costs considerably less than the alternator. Get the price from a auto repairer before embarking on repairs, simply because you can never be sure of the source of the problem. We hope this text has served you well, if so you can leave a comment. Enjoy the road with your Volvo V40.