I think it's the idler guy in the middle, up top... WD 40 is not doing the trick anymore. Is this something I need to replace, or can I just rank it off and put some grease in there ?
This happend to me...and WOW was it annoying....i finally ended up replacing the idler pully and it did the trick...if i were you i would try that..they arent to expensive and they are relativly easy to install.
probably bad bearing in the idler pulley replace it before it goes out. a couple of my other vehicles this has happened on and the idler will lock up and break the belt. they are not but $20-40 from advance or autozone