The belt could be damp, loose or slipping.
This problem sounds like a loose or worn alternator belt. The belt needs to be tightened or replaced and this should fix it.
A worn alternator belt, loose alternator belt or bad alternator belt tensioner.
Normally this is caused by a drive belt that is loose or worn and needs replacing.
Most likely it is a loose fan belt (commonly used on older vehicles, prior to the newer serpentine style belt). The fan belt can be tightened by loosening the alternator mounting bolts and adjusting the alternator tension on the belt.
simply loosen the top alternator adjustment bolt, and you may need to loosen the lower mounting bolt if it's very tight. slide the alternator to the front of the car and remove the belt. replace the belt and slide the alternator back until the belt is tight. you might need to use a large screwdriver to get enought leverage to get propper belt tightness. tighten down the top adjustment bolt. start the car and listen for belt squeal. if it's present then loosen the top bolt again and try to get the belt tighter.
Very possibly. If the alternator is locked up (shot) it will burn the belt off of it in seconds. If the alternator has no belt on it chances are this is why. I hope this helps you. Mark
Yes
If is probably an old fan belt that is slipping and causing a screeching noise. Check the one that is attached to your AC or alternator and replace it if necessary.
That would be a good thing because putting the belt on after you start the car would be dangerous.
Defective alternator or broken alternator belt.
Does it squeal? A loose serpentine/alternator belt can do that. Also a bad laternator,or poor/loose connections tothe alternator. You need electricity to fire your sparkplugs, and without that your car will stall out. Could also be a short circuit somewhere draining your battery faster than the alternator can keep up with.
Slipping or glazed belt? Belt driven accessory (alternator/ water pump etc.)? Belt tensioner?