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, certainly you’ve already had that fear. So when you perceive an alternator noise on volvo v90, you can already see yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this content 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 v90 and then what the causes and solutions to alternator noise on volvo v90 may be.
Role and alternator operation volvo v90
Alternator role
Your alternator is an important part of your volvo v90. Indeed, its mission is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the mission of charging the battery once the car is in motion, to provide power to the car in motion and to allow you to always have a enough energy source to be able to restart the next time.
Alternator functioning
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The alternator works on an electrical principle that has been used for decades, the principle of copper coil wound around a magnet . This coil while rotating makes electricity. It is the engine itself that will give the energy needed by the alternator to produce the energy, via the accessory belt or alternator belt. When your volvo v90 engine stops, the battery takes over to give the car with energy.
What are the different alternator noises or sounds on my volvo v90 and what are the causes?
I discover a knocking noise from the alternator of my volvo v90
One of the characteristic noises of a tired alternator on volvo v90 is a knocking noise. This alternator sound on volvo v90 will generally occur when your engine is idling, it can be linked to voltage drops that could disturb the normal operation of electrical components such as headlights for example. Most often, it is a of both bearings of the alternator that is malfunctioning, to verify it, use a multimeter on the terminals of your car with the engine running and you must look for a value between 12 and 14.7 volts, which means that your alternator is charging your battery well. If the value is lower, the alternator of your volvo v90 is tired and you should think about changing the bearing if it is the only reason otherwise the whole part.
I perceive a grinding noise coming from the alternator of my volvo v90
If you are in the case where the alternator of your volvo v90 causes grinding sounds, in this case you will have to look into it more seriously. This indicator can testify as for the knocking sound of a tired bearing, however , usually, we generally realize by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this case, we advise that you consult this document to find all the necessary details to solve an accessory belt noise on volvo v90.
I perceive a loud noise from the alternator of my volvo v90
Experiencing a loud noise from the alternator of your volvo v90 is quite regular, in fact, it emits an audible sound when producing the electrical pulses it generates. It is up to you to verify that the battery indicator light on your dashboard does not show up, 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 advise that you read this document to find other ways to solve problem of noises from front end on volvo v90.
