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 Opel Mokka, you can already see yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this post to help you find the sources of alternator sounds. In this article, you will first see the role and operation of the alternator in your Opel Mokka and then what the causes and solutions to alternator noise on Opel Mokka may be.
Role and alternator operation Opel Mokka
Alternator role
Your alternator is an fundamental component of your Opel Mokka. Indeed, its objective is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the task of recharging 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 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 concept of copper coil wound around a magnet . This coil while spinning generates electricity. It is the engine motor itself that will provide the energy required by the alternator to generate the energy, via the accessory belt or alternator belt. When your Opel Mokka engine stops, the battery takes over to provide the car with energy.
What are the different alternator noises or sounds on my Opel Mokka and what are the causes?
I listen to a knocking noise originating from the alternator of my Opel Mokka
One of the typical noises of a tired alternator on Opel Mokka is a knocking noise. This alternator sound on Opel Mokka will generally occur when your engine is idling, it can be associated with voltage drops that could affect 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 defective, to check 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 recharging your battery well. If the value is lower, the alternator of your Opel Mokka is tired and you should think about replacing the bearing if it is the only cause otherwise the entire part.
I discover a grinding noise coming from the alternator of my Opel Mokka
If you are in the situation where the alternator of your Opel Mokka generates grinding sounds, in this circumstance you will have to look into it more seriously. This sign can testify as for the knocking sound of a tired bearing, but usually, we generally 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 encourage that you read this document to find all the necessary details to solve an accessory belt noise on Opel Mokka.
I discover a loud noise from the alternator of my Opel Mokka
Experiencing a loud noise from the alternator of your Opel Mokka is quite typical, in fact, it produces an audible sound when creating 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 encourage that you have a look this document to find other ways to solve problem of noises from front end on Opel Mokka.
