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 discover an alternator noise on Alfa Romeo 159, you can already see yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce this article to help you find the origins of alternator sounds. In this article, you will first learn the role and functions of the alternator in your Alfa Romeo 159 and then what the causes and solutions to alternator noise on Alfa Romeo 159 may be.
Role and alternator operation Alfa Romeo 159
Alternator role
Your alternator is an fundamental part of your Alfa Romeo 159. In fact, its mission is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of charging 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 functions 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 motor itself that will give the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Alfa Romeo 159 engine stops, the battery takes over to give the car with energy.
What are the different alternator noises or sounds on my Alfa Romeo 159 and what are the causes?
I find out a knocking noise caused by the alternator of my Alfa Romeo 159
One of the characteristic noises of a tired alternator on Alfa Romeo 159 is a knocking noise. This alternator sound on Alfa Romeo 159 will generally happen when your engine is idling, it can be connected to voltage drops that could affect the normal operation of electrical elements such as headlights for example. In many cases, it is a of both bearings of the alternator that is defective, to check 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 charging your battery well. If the value is lower, the alternator of your Alfa Romeo 159 is tired and you should think about changing the bearing if it is the only reason otherwise the entire part.
I discover a grinding noise coming from the alternator of my Alfa Romeo 159
If you are in the case where the alternator of your Alfa Romeo 159 produces grinding sounds, in this case you will have to check it more seriously. This indicator can testify as for the knocking sound of a tired bearing, but usually, we often realize by looking more closely that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this case, we recommend that you consult this article to find all the necessary information to solve an accessory belt noise on Alfa Romeo 159.
I discover a loud noise from the alternator of my Alfa Romeo 159
Finding out a loud noise from the alternator of your Alfa Romeo 159 is quite typical, in fact, it produces an audible sound when producing the electrical pulses it generates. It is up to you to check 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 recommend that you have a look this article to find other ways to solve problem of noises from front end on Alfa Romeo 159.
