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 least you’ve already had that fear. So when you discover an alternator noise on Mazda CX 9, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to produce this article to help you find the sources of alternator sounds. In this article, you will first learn the role and operation of the alternator in your Mazda CX 9 and then what the causes and solutions to alternator noise on Mazda CX 9 may be.
Role and alternator operation Mazda CX 9
Alternator role
Your alternator is an important component of your Mazda CX 9. Indeed, its mission is to generate power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the task of charging 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 operates on an electrical principle that has been used for decades, the concept of copper coil wound around a magnet . This coil while spinning produces electricity. It is the engine itself that will give the energy needed by the alternator to produce the energy, via the accessory belt or alternator belt. When your Mazda CX 9 engine stops, the battery takes over to give the car with energy.
What are the different alternator noises or sounds on my Mazda CX 9 and what are the causes?
I discover a knocking noise originating from the alternator of my Mazda CX 9
One of the characteristic noises of a tired alternator on Mazda CX 9 is a knocking noise. This alternator sound on Mazda CX 9 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. Often, it is a of both bearings of the alternator that is defective, to verify 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 Mazda CX 9 is tired and you should consider swapping the bearing if it is the only cause otherwise the complete part.
I discover a grinding noise coming from the alternator of my Mazda CX 9
If you are in the case where the alternator of your Mazda CX 9 generates grinding sounds, in this circumstance you will have to look into it more seriously. This symptom can testify as for the knocking sound of a tired bearing, but generally, we often see 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 recommend that you consult this article to find all the necessary information to solve an accessory belt noise on Mazda CX 9.
I discover a loud noise from the alternator of my Mazda CX 9
Hearing a loud noise from the alternator of your Mazda CX 9 is quite common, in fact, it emits an audible sound when producing the electrical pulses it generates. It is up to you to verify 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 take a look at this article to find other ways to solve problem of noises from front end on Mazda CX 9.
