If the drive belt is squealing, then one of two things is wrong. Either the belt is loose or it is worn out. Adjust the belt tension or replace the belt.
Normally this is caused by a drive belt that is loose or worn and needs replacing.
Drive belt(s) is/are not tightened enough would be my first guess.
its most likely your serpentine belt, sometimes you can fix it with some belt dressing, try spraying some on there before you replace the belt
Change the belt
Change the belt
install timing belt on 1993 Plymouth sundance
The belt will not generally squeal, but the water pump often makes a "Scrapy-scrapy-scrapy" sound.
You can't, the belt is called a serpentene belt, you have to replace the belt.
Very often it is not the alternator, but the belt that squeals. This can be checked by rubbing a little soap on the belt, if the squeal goes away, you know it's the belt. The belt may squeal for a number of reasons: the belt is new, the belt is old, the belt tension is too tight or loose, the belt is cold (the squeal goes away on it's own when it warms up). Some belts just squeal for no discernable reason, but there are 'belt dressing' sprays available for sale that sometimes help. Always check the belt before spending a bunch of money on a new alternator that may not be needed.
glazing of the belt may cause that noise time to replace,little bit of dish soap will take it away
either too tight or to loose, need about 8mm of give between alternator and drive pulley
A loose belt. Most likely the alternator belt, if it doesn't squeal when you make a sharp turn.