First, you need to inspect the belt for cracks and defects. Also make sure that the belt is still flexible. If it does not have any problems, use tension bolt to tighten the belt.
Either the belt is worn out or the tensioner is defective.
how can i fix the code po441 for toyta Camry 1998
oil it or shoot a squealer
Replace with Good Year Gatorback belt. Costs more but worth the money.
Assuming the belt and pulleys are in good shape, put a dab of clear silicone grease on both sides of the belt. Do this with the engine off. Squeak is gone.
With engine off try putting a small dab of silicone grease on each side of the belt. It works for me.
I would bring it in to a car shop because my family has had problems and it has been from the motor, to the belt, to the steering axle.
Install a new one. It's squeeling most likely because it is getting stretched.
where is the blend door machanism (acuator) located in my 1998 toyota camryalso how to fix
If your burglary tool doesn't work, try a screwdriver.
You can replace it. Or you get a plastic tank fix kit in AutoZone or Advance Auto Parts.
tape it