Check alternator Belt starts squealing and then alternator burns out. Have already had multiple belt adjustments and one alternator rebuild but same problem keeps recurring.

SOURCE: I keep braking (burning off belt smokinging squealing than breaking)than go to my alternator

How long does the belt last, and is it wearing off on the edges? With the belt off I would check all the rest of your acessories for no side play and they should all turn very easily. Also what engine does your car have? Is it the 2.3L 4 cyl? Thank you for using fixya.com

SOURCE: squealing belt

Causes of problem like yours can be:

1. the alignment of the pulley of your alternator and the alignment of your engine's pulley. you may check it by just looking at it, be sure they are precisely parallel with each other.
2. The size of the opening of your pulleys, you try to measure it using a caliper, they should have the same mouth size
3. loose pulleys causing wiggle
4. rusts on your pulleys

SOURCE: Belt squealing when first started

The squeal when first started is most likely coming from the alternator belt. You need to have the tension of the belt checked to make sure it is properly adjusted. If you had a shop due it have , have them recheck it. Or stop by a local shop and they shouldnt charge you to check it. But its all in how you ask, if you go in and tell them your problem most likely they will try to get you for a fee to diagnose it.Just ask to have them check the belts and make sure there tight.If its ok, has anyone tried to fix your sqeul by spraying anything on it? if so your belt could be slipping from the lube they used. there is one more thing you can try, providing all the pullys/ tensioner pully if equiped are straight. If it is a serpantine belt(flat/multiple grooves) not A v-belt
when the engine is off,you take a tablespoon or so of corn starch, yes the stuff in the yellow box in the kitchen, and put it on the inside oif the belt. Its acts like a dry lube. I learned this trick at the GM dealership, from a factory bu;lliton. good luck

SOURCE: Alternator belt squeals under load

check all the pulleys for alignment and wear, Also check the alternator output (make sure it is not always under load) hook up and ammeter on the positive) what

Are you running a large stereo? if so this can cause this especailly if the large stereo is not fused

SOURCE: alternator belt

I had the same problem, repeatedly for more than a year. Turns out that the first time the belt broke and was replaced, something in the piece that the belt raps around was moved very slightly out of line. The mechanic told me that the piece has to eb calibrated perfectly; otherwise the belt will keep loosening and breaking. The piece--I think it was the bracket (or whatever) on the water pumpt that holds the belt onto the pump--was reclaibrated, and, voila! No further problems, at not yet.