So I replaced the idler pulley, tensioner, and belt about a year ago (03/11/12) using this DIY as the belt was riding about a 1/4 inch off of the tensioner. After replacing everything I checked the belt a few times a week for the first month to ensure that everything was still seated properly and looked good. Fast forward to tonight and while looking under the hood to see if I could figure out where a squeaking was coming from, I noticed that the belt had once again begun to ride off the tensioner about a 1/4 inch.
Has anyone else seen this happen again after changing out the idler pulley, tensioner, and belt? It's a relatively simple job if I have to do it again, but I'm a little aggravated that this would happen again in such a short period of time and especially considering I have to buy all of the parts again!