It may not be unknown to you, however the alternator is a determining element within an engine. This one is responsible for changing energy of the engine block of your volvo 740 in Electricity supply in order to recharge the battery. In the specific case where there is a concern, this can consequently essentially cause electrical failures. It therefore seems essential to pay attention to it. However, the concern can mainly come from its belt, and even pulleys. We will see through this guide where the problems selon le noise that comes out.noise-alternator-volvo-740

Alternator belt noise on a Volvo 740

La alternator belt, also called accessory belt, is the essential element that contributes to the proper functioning of the alternator. It is he who, through his rotation, takes away the alternator and will give the means to produce electricity. However, it also serves to train others pumps of the engine block. If it ever destroys, it could cause damages rather important in the engine of the Volvo 740.

A metallic noise on the Volvo 740:

It is a hazard that generally arises Cold. The most common reason is that the streaks in the belt turn out to be damaged. However, it can also happen when the pulley is slightly offset. If the belt breaks up, it could obviously break. If you ever notice this noise, the best thing to do is to change the belt and the problem will be corrected almost every time.

A sharp squeal on the Volvo 740:

This is the most ordinary concern, as well as the least critical. It usually comes from cold, but can reproduce even when hot from time to time. However, it suddenly disappears. This noise usually comes from when the accessory belt is slack. It will suffice tender and it's done! Be careful, if it remains in this situation for a long time, the belt could deteriorate and cause a more serious problem in the long term. This acute screeching also occurs at times when the damper pulley happens to be damaged, however it is rather rare.

A slight hiss or breath on the Volvo 740:

It is the opposite of the concern of the last example. Your belt is probably far too tight or too small. You imagine what you must do!

Alternator noise on a Volvo 740

When it is the alternator that produces this noise and not the belt, in this case the problems will turn out to be quite singular. However, the noise we hear could have resemblances compared to that of a belt, so a high hiss. The problem may come from electrical failure, this remains quite frequent. In case the voltage necessary for the proper functioning of this volvo 740 remains deficient, this is usually seen during a lack of alertness of the lights or bulbs within the vehicle. In case the lack of alertness is unusual, it may be that the battery indicator can be in operation. In order to make a real diagnostic of your problem, it is still possible to use a voltmeter and probe the tension via the + and - of your battery, with the ignition on obviously. If ever the voltage is found to be lower than that recommended by the battery, the problem could actually come from the alternator. In this situation, it usually needs to be changed.

Conclusion:

A new alternator noise generally comes from the alternator belt, but can also come from the alternator itself. financially, the alternator belt costs much less than the alternator. Get the price from a mechanic before starting work, because there is no guarantee of the source of the problem. We hope this article helped you, if so we invite you to write a comment. Enjoy the road with your Volvo 740.