pully/belt?

i was driving to work and heard this really loud squeeling at a red light and as i went from the light the squeeling stopped. it did this through out the day and when i got home i noticed one of the pulleys was actually loose, so i tightened it up and put the car in gear and heard like a ticking coming from that same area and i also noticed that when i turned on the AC it got worse and then when i hit the gas it just squeels like a bitch. do you guys think its a bad belt, or could the bearings be bad in the pulley, im not sure what the pulley is though, its next to the altenator and is on the top, not down towards the bottom btw it is the v6...all help is appreciated thanks

change the belt if that doesnt work check the tensioner

When my motor mounts went bad this happened, it caused my belts to loosen up, and they began to squeal like a pig.

wow never thought of that, my mounts are on their way out too....well anyway i bought a new belt and it stopped but i am changing that pulley anyway just because its already ordered and it wont hurt anything. thanks guys

no prob.