2. A growling or grinding noise. This noise is usually caused by the alternator's bearings failing. This can be caused by a lack of lubrication or by the bearings becoming worn out.
3. A clicking or tapping noise. This noise is usually caused by the alternator's voltage regulator failing. This can be caused by a loose connection, a damaged voltage regulator, or a bad diode.
If you hear any of these noises, it's important to have your alternator checked by a qualified mechanic as soon as possible. A bad alternator can cause a variety of problems, including:
* Dimming or flickering lights
* Slow engine cranking
* Loss of power
* Stalling
In some cases, a bad alternator can also cause a fire.
