After installing this alternator on my 1984 mustang. I am running under drive pulleys but I left the pulley that came on the alternator on it. It is now making a squeaking noise when cold. It shouldn't be my belt because I just put a new belt on. Any suggestions ?
I would check the condition of the belt tensioner first. You are probably just experiencing the added drag of a high output alternator that is putting more stress on the tensioner. This is a great upgrade to your 84 mustang. Here ya go: