When I checked the belt, about half of it was there and it was cracked pretty bad so I decided to change it. Went to Advance Auto and got a Duralast belt, put it on and took care of that. It was fine when I started it and revved it right after I replaced it, then drive 200 miles back on it. Well, now it will not stop screaming. At idle is the only time it shuts up, but not very much, otherwise it is very loud and embarrassing. I threw tons of WD-40 at it, took care of it for about 2 mile. then tried grease, and that did somehting but the next morning it was loud as ever. This has a automatic spring tensioner, right? So I would guess that I don't need to tighten it since the spring does it, or am I wrong here? I really need to get this fixed, it is driving me crazy!!!! It is so loud, sounds like someone is strangling a cat under my hood!!! I tried to search and see what others did, but oculdn't find anything related to it screaming like this. Oh, if it makes a difference in the morning it is worse then in the afternoon, although the difference is not that much. Thanks.