Alternator problem???

Next day when I was going to school I heard the same noise again, and I still do.
So, any one have the same problem till now???
i have 2
one. when i turn in makes a winding sound ( cols or warm)
two. a grrrr sound when i give it more gas or when its parked running cold
any idea what that maybe/?

The dealer only told me that was something related to the alternator, but I forgot the name, and my problem its only after coold starts like in the morning!!!
I'm waiting to my service B, to resolve that problem...



