Did you ever had this trouble trying to start your car in the morning and it doesn’t work ? If that didn’t happen to you, at minimum you’ve already had that apprehension. So when you hear an alternator noise on Bmw Serie 3 E92, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce this content to help you find the sources of alternator sounds. In this article, you will first discover the role and functions of the alternator in your Bmw Serie 3 E92 and then what the causes and solutions to alternator noise on Bmw Serie 3 E92 may be.
Role and alternator operation Bmw Serie 3 E92
Alternator role
Your alternator is an important part of your Bmw Serie 3 E92. Indeed, its mission is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the mission of recharging the battery once the vehicle is in motion, to provide power to the vehicle in motion and to allow you to always have a sufficient 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 concept of copper coil wound around a magnet . This coil while rotating produces electricity. It is the engine itself that will furnish the energy needed by the alternator to produce the energy, via the accessory belt or alternator belt. When your Bmw Serie 3 E92 engine stops, the battery takes over to furnish the vehicle with energy.
What are the several alternator noises or sounds on my Bmw Serie 3 E92 and what are the causes?
I listen to a knocking noise originating from the alternator of my Bmw Serie 3 E92
One of the characteristic noises of a tired alternator on Bmw Serie 3 E92 is a knocking noise. This alternator sound on Bmw Serie 3 E92 will generally occur when your engine is idling, it can be associated with voltage drops that could disrupt the normal operation of electrical parts such as headlights for example. In general, it is a of both bearings of the alternator that is defective, to check it, use a multimeter on the terminals of your vehicle with the engine running and you must look for 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 Bmw Serie 3 E92 is tired and you should consider changing the bearing if it is the only cause otherwise the entire part.
I hear a grinding noise coming from the alternator of my Bmw Serie 3 E92
If you are in the case where the alternator of your Bmw Serie 3 E92 generates grinding sounds, in this circumstance you will have to look into it more seriously. This indicator can testify as for the knocking sound of a tired bearing, but in general, we often realize by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this circumstance, we suggest that you read this article to find all the necessary information to solve an accessory belt noise on Bmw Serie 3 E92.
I hear a loud noise from the alternator of my Bmw Serie 3 E92
Listening a loud noise from the alternator of your Bmw Serie 3 E92 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 suggest that you read this article to find other ways to solve problem of noises from front end on Bmw Serie 3 E92.
