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 , certainly you’ve already had that apprehension. So when you discover an alternator noise on Peugeot 307, you can already see yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to produce this article to support you find the sources of alternator sounds. In this article, you will first see the role and functions of the alternator in your Peugeot 307 and then what the causes and solutions to alternator noise on Peugeot 307 may be.alternator-noise-peugeot-307

Role and alternator operation Peugeot 307

Alternator role

Your alternator is an vital part of your Peugeot 307. Indeed, its objective is to provide 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 reserve 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 produces electricity. It is the engine motor itself that will give the energy required by the alternator to create the energy, via the accessory belt or alternator belt. When your Peugeot 307 engine stops, the battery takes over to give the vehicle with energy.

What are the different alternator noises or sounds on my Peugeot 307 and what are the causes?

I hear a knocking noise from the alternator of my Peugeot 307

One of the typical noises of a tired alternator on Peugeot 307 is a knocking noise. This alternator sound on Peugeot 307 will generally happen when your engine is idling, it can be associated with voltage drops that could disturb the normal operation of electrical components such as headlights for example. In most cases, it is a of both bearings of the alternator that is malfunctioning, to examine it, use a multimeter on the terminals of your vehicle 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 Peugeot 307 is tired and you should think about swapping the bearing if it is the only cause otherwise the complete part.

I discover a grinding noise coming from the alternator of my Peugeot 307

If you are in the situation where the alternator of your Peugeot 307 produces grinding sounds, in this case you will have to look at it more seriously. This warning sign can testify as for the knocking sound of a tired bearing, but generally, we often notice by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this case, we suggest that you consult this document to find all the necessary information to solve an accessory belt noise on Peugeot 307.

I discover a loud noise from the alternator of my Peugeot 307

Experiencing a loud noise from the alternator of your Peugeot 307 is quite normal, in fact, it produces 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 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 check out this document to find other ways to solve problem of noises from front end on Peugeot 307.