Who hasn’t found himself in the situation where his car doesn’t start one morning on the way to work? If that didn’t happen to you, at least you’ve already had that fear. So when you hear an alternator noise on Mercury Mariner, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce this post to help you locate the sources of alternator sounds. In this article, you will first discover the role and functions of the alternator in your Mercury Mariner and then what the causes and solutions to alternator noise on Mercury Mariner may be.
Role and alternator operation Mercury Mariner
Alternator role
Your alternator is an vital part of your Mercury Mariner. Indeed, its goal 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 let you to always have a enough 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 principle of copper coil wound around a magnet . This coil while rotating creates electricity. It is the engine itself that will give the energy required by the alternator to generate the energy, via the accessory belt or alternator belt. When your Mercury Mariner engine stops, the battery takes over to give the car with energy.
What are the several alternator noises or sounds on my Mercury Mariner and what are the causes?
I hear a knocking noise coming from the alternator of my Mercury Mariner
One of the characteristic noises of a tired alternator on Mercury Mariner is a knocking noise. This alternator sound on Mercury Mariner 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. 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 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 Mercury Mariner 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 Mercury Mariner
If you are in the situation where the alternator of your Mercury Mariner generates grinding sounds, in this case you will have to look at it more seriously. This sign can testify as for the knocking sound of a tired bearing, but in most cases, we generally realise by looking more strongly that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this case, we advise that you look for advice this document to find all the necessary information to solve an accessory belt noise on Mercury Mariner.
I hear a loud noise from the alternator of my Mercury Mariner
Listening a loud noise from the alternator of your Mercury Mariner is quite normal, 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 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 advise that you have a look this document to find other ways to solve problem of noises from front end on Mercury Mariner.
