Serpentine Belt

Heys guys.

Thanks for all your help so far. I am one of the few guys out there that is automotively challenged, lol, and I have 1 more question for ya.(for now)

The tension arm pully on the serpentine belt squeeks loud. I know this is where the squeek is coming from. I sprayed some wd-40 on it to make sure that was it. I noticed that after i did it, the belt started to sway back and forth a little on the pully, so i took it to the car wash and hosed off the wd-40. That seemed to help alot, and now it only does it when i press on the gas. I'm guessing it must have had some sort of crap on it. Sitting at idle it doesn't make a sound. Do I need to replace the pully, or is there a way i can fix this? I don't wanna put any more lubricants on it for fear the belt will slip off.

thanks

Holmz

I replaced the pully, and everything is good to go