You may already know this, however the alternator is a crucial element in an engine. It is this one which is guaranteed to change energy of the engine block of this Volvo Xc40 in Electricity supply in order to recharge the battery. In the specific case where there is a problem, this could usually cause electrical failures. It is therefore important to pay attention to it. However, the concern could also come from your belt, sometimes pulleys. We will find out in this post where the problems related to noise that you hear.noise-alternator-Volvo-Xc40

Noise alternator belt on a Volvo Xc40

La alternator belt, also known as an accessory belt, turns out to be the essential component which contributes to the proper functioning of the alternator. It is it which thanks to its convolution drives the alternator and will create electricity. But it also serves to operate other pumps of the engine block. If it breaks, it could cause damages rather serious within the engine of this Volvo Xc40.

A metallic noise on the Volvo Xc40:

Here is a noise which generally comes Cold. The most common cause is that the streaks on this belt will be damaged. But it can also happen in the case where the pulley is slightly out of gon. If the belt deteriorates, it could obviously break. If you ever identify this sound, the best thing to do is to replace the belt and the problem will be solved almost every time.

A sharp squeal on the Volvo Xc40:

It is the most recurrent concern, as well as the least dramatic. It often comes from cold, but may reappear even when hot sometimes. However, it disappears instantly. This problem usually occurs when the accessory belt is not tight enough. It is necessary to tender and it's won. Please note, if it remains in this situation for a long time, the belt could deteriorate and cause more serious malfunction over time. This acute screeching also occurs at times when the damper pulley is damaged, however it is rarer.

A slight hiss or breath on the Volvo Xc40:

It is the opposite of the previous concern. Your belt is probably excessively tight or too small. You know what you are going to have to do!

Alternator noise on a Volvo Xc40

When it is really the alternator that produces this sound and not your belt, then the problems will be totally divergent. However, the sound you hear may have some resemblances compared to that of a strap, i.e. high hiss. The problem may arise from a electrical failure, this remains rather ordinary. In case the voltage essential to the good activity of the Volvo Xc40 remains deficient, it is usually seen in the lack of alertness of the indicator lights or bulbs in the vehicle. If the lack of alertness is excessive, it happens that the battery indicator can be turned on. So as to carry out a real diagnostic of this problem, it is useful to use a voltmeter in order to check the tension via the plus and minus of your battery, with the ignition on of course. If the voltage turns out to be lower than that recommended by the battery, the problem will consequently come from the alternator. So, it will usually have to be replaced.

Conclusion:

An alternator sound generally comes from the alternator belt, but may also come from the alternator itself. Economically, an alternator belt is much cheaper than the alternator. Get the price from a mechanic rather than embarking on work, simply because we are by no means certain of the source of the problem. Hoping that this post has been useful to you, in this case you can post a comment. Enjoy the road with your Volvo Xc40.