Look to the alt. belt. It may squeal under load.
A worn belt will cause a squealing noise. The squealing noise is caused when the belt slips. Tightening the belt will temporarily fix the problem.
Yes.Equally likely is if the belt is much more than 3-4 years, the material is glazing over or hardening, which is another common cause of squealing.
it could be that your brakes are dirty or that you need new pads
you probly have a belt slipping, a can of belt dressing should stop the sound
The most common cause is slipping belt
Check the belts. The most common cause of squealing is a worn or loose belt on the front of the engine.
Loose or worn belt(s).
check a/c compressor and belt.
Probably a worn wheel bearing...have it looked at by a technician before it seizes.
When refilling the oil some may have dripped onto the belt which would cause it to start slipping badly and squealing loudly.
It sounds like the fan-belt is slipping.
loose or glazed fan belt.