My alternator has been a lot noisy lately. To describe the sound, its like a whine or whistle as id there's a turbo or a supercharger in my car. Serpentine belt changed 9 months ago. Car is driven 160kSuggestion required to what should I do and check my alternator.@Xulfiqar
Are you sure it is alternator? If yes it must be bearing.
Get it double checked.
Alternator bearingAc compressor Bearing Water body
All 3 are same location and make almost similar noise.
which car it is ??
Corolla Altis 2012
I'll look into it. Thank you
yes, the noise is coming from where the alternator is located. will get it checked again