Who hasn’t found himself in the situation where his car doesn’t start one morning on the way to work? If that didn’t happen to you, at least you’ve already had that fear. So when you hear an alternator noise on volvo xc70, you can already see yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to produce this post to help you locate the origins of alternator sounds. In this article, you will first learn the role and functions of the alternator in your volvo xc70 and then what the causes and solutions to alternator noise on volvo xc70 may be.
Role and alternator operation volvo xc70
Alternator role
Your alternator is an fundamental component of your volvo xc70. In fact, its goal is to generate power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of recharging the battery once the car is in motion, to provide power to the car in motion and to let you to always have a sufficient energy reserve to be able to restart the next time.
Alternator functioning
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The alternator operates on an electrical principle that has been used for decades, the concept of copper coil wound around a magnet . This coil while spinning generates electricity. It is the engine itself that will provide the energy required by the alternator to create the energy, via the accessory belt or alternator belt. When your volvo xc70 engine stops, the battery takes over to provide the car with energy.
What are the distinctive alternator noises or sounds on my volvo xc70 and what are the causes?
I listen to a knocking noise caused by the alternator of my volvo xc70
One of the characteristic noises of a tired alternator on volvo xc70 is a knocking noise. This alternator sound on volvo xc70 will most of the time occur when your engine is idling, it can be connected to voltage drops that could affect the normal operation of electrical parts such as headlights for example. In most cases, it is a of both bearings of the alternator that is defective, to verify it, use a multimeter on the terminals of your car with the engine running and you must obtain a value between 12 and 14.7 volts, which means that your alternator is recharging your battery well. If the value is lower, the alternator of your volvo xc70 is tired and you should consider swapping the bearing if it is the only cause otherwise the complete part.
I hear a grinding noise coming from the alternator of my volvo xc70
If you are in the situation where the alternator of your volvo xc70 produces grinding sounds, in this case you will have to look at it more seriously. This indicator can testify as for the knocking sound of a tired bearing, but generally, we often notice by looking more closely that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this case, we encourage that you read this document to find all the necessary information to solve an accessory belt noise on volvo xc70.
I hear a loud noise from the alternator of my volvo xc70
Hearing a loud noise from the alternator of your volvo xc70 is quite regular, in fact, it produces an audible sound when creating the electrical pulses it generates. It is up to you to verify that the battery indicator light on your dashboard does not appear, and that you do not have a voltage drop when your engine is running (headlight or dashboard light that jumps for example. If this noise is too loud, we encourage that you go to this document to find other ways to solve problem of noises from front end on volvo xc70.
