[ChefCarnivore]

I had the same thing happen to me when the top idler bearing failed and the bolt holding it on unscrewed to the firewall. Two tips- 1) You must have a 24mm wrench (preferably an offset box) to take tension off the belt, 2) when you screw the bolt in for the top idler do it from the top of the firewall.

Also the actual bearing is only about 10 bucks, so if you can find someone to remove the bearing and press in the new one you can save $75 over buying a new one.