Who hasn’t found himself in the situation where his car doesn’t start one morning on the way to work? If it never happened to you , at minimum you’ve already had that fear. So when you listen to an alternator noise on Bmw Serie 1 F21, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this article to help you locate the origins of alternator sounds. In this article, you will first see the role and functions of the alternator in your Bmw Serie 1 F21 and then what the causes and solutions to alternator noise on Bmw Serie 1 F21 may be.
Role and alternator operation Bmw Serie 1 F21
Alternator role
Your alternator is an vital component of your Bmw Serie 1 F21. In fact, its objective 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 let you to always have a sufficient energy source to be able to restart the next time.
Alternator functioning
>
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 spinning produces electricity. It is the engine motor itself that will give the energy required by the alternator to generate the energy, via the accessory belt or alternator belt. When your Bmw Serie 1 F21 engine stops, the battery takes over to give the car with energy.
What are the different alternator noises or sounds on my Bmw Serie 1 F21 and what are the causes?
I notice a knocking noise caused by the alternator of my Bmw Serie 1 F21
One of the typical noises of a tired alternator on Bmw Serie 1 F21 is a knocking noise. This alternator sound on Bmw Serie 1 F21 will generally happen when your engine is idling, it can be associated with voltage drops that could affect the normal operation of electrical parts such as headlights for example. In general, it is a of both bearings of the alternator that is faulty, to examine it, use a multimeter on the terminals of your car with the engine running and you must get 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 Bmw Serie 1 F21 is tired and you should consider swapping the bearing if it is the only cause otherwise the whole part.
I listen to a grinding noise coming from the alternator of my Bmw Serie 1 F21
If you are in the situation where the alternator of your Bmw Serie 1 F21 generates grinding sounds, in this circumstance you will have to look into it more seriously. This warning sign can testify as for the knocking sound of a tired bearing, but usually, we generally realise by looking more meticulously 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 details to solve an accessory belt noise on Bmw Serie 1 F21.
I listen to a loud noise from the alternator of my Bmw Serie 1 F21
Finding out a loud noise from the alternator of your Bmw Serie 1 F21 is quite regular, in fact, it emits an audible sound when producing the electrical pulses it generates. It is up to you to examine 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 suggest that you take a look at this article to find other ways to solve problem of noises from front end on Bmw Serie 1 F21.
