because it's slipping. tension or replace.
It will squeak
The Serpentine Belt needs to be tightend with the tensioner pulley (Idler Pulley)
You have a bad bearing in one of the pulleys. Remove belt and spend all the pulleys by hand, they should be smooth and quiet.
Almost impossible without a lot of work. Just get rid of the squeak by spraying all belts and pullies with belt dressing.
Check for small cracks or excessive wear in the surface of the belt, oil on the pulleys or buildup of debris in the grooves of the pulleys. belt tensioner may also be faulty. possible overstretched belt.
power steering belt, if serpentine belt, your p/s pump might be low on oil or going south. but check belt and oil level first.Good luck
No, an accessory belt is not considered a serpentine belt. However, a serpentine belt is considered a specific type of accessory belt.
OK well my discovery of why a new serpentine belt squeaks is if some one does not tighten a screw or place the belt on all of the pulleys correctly then it squeals. also a highly recommended thing i found that worked on my 1994 jeep wrangler was a spray called belt conditioner it helps tremendously, and make sure that the belt is on all the pulleys correctly.
A squeak squeak squeak noise is one of two thingsThe belt has a damaged portionEither the belt or one of the pulleys has oil or another contamination on it.If it is a dry grating wine it is a bad bearing in a pulley or driven accessory (alternator, water pump, AC pump etc)If it is a steady squeal the belt is slipping and is hard and glazed or the tensioner is seized and allowing it to run loose or one of the pulley things is seized.
It could be a bad bearing in the idler pully, A/C clutch, ect. Try turning on the A/C to see if it changes the squeek.
The serpentine belt would be the same as the accessory drive belt.
Serpentine Belt Diagram ML320