A bad alternator will make whats called a whirring noise. It could also make a low growl. This is just the bearings going bad. If your alternator is not supplying any power, it has nothing to do with noise typically.
You may see the headlights and dash lights flicker at an idle. You may hear unusual noises coming from the alternator when the engine is running.
Bad bearings in an alternator would make a grinding or roaring sound. If a Diode Plate is failing you might hear a buzzing sound in the radio that changes pitch with the speed of the engine.
When your battery does not get charge.
What you are hearing is the clutch on the air conditioning pump engaging... the alternator doesn't make any noise unless the bearings are going bad and then a grinding noise will be heard.
There are a few reasons why your alternator might keep going bad such as rusty latches under the car. You may also have leaks, dents, or parts that need to be replaced on the vehicle that are effecting your alternator.
Normally this is the bearings going bad.
There are several signs that an alternator is going bad. A few signs are dim lights, smell, warning lights, and a dead battery.
If bearings go bad on a alternator/ will make a grindind noise or long squilling noise.. but if only electronic's inside alternator are damage no noise wil be heard
no, it would make everything in the car dim because of no charge going to the battery
good
Alternator is going out? battery is going bad?