QUOTE(McMark @ Oct 2 2016, 10:59 AM)
The lower bolt is in place and tight?
All the fan blades are intact?
Alternator pulley out of round / bent?
Maybe you need to get your belt balanced.
I have an idea that I'll be looking for a new alternator in the future. I have noticed since the repair that the alternator is making a pretty loud whining noise. Maybe a bearing issue. Anyway, if I'm going to install a seat heater in the car, I might need more of them amp things to work with. Till then it's producing 13.8 volts at low rpm. I took my belt into NAPA and they balanced it on their dynamic belt balancing and tension setting machine. You should get one of those for your shop.