Which pulley is hooked straight to motor up top right behind motor mount, I can't find a diagram anywhere. The one under the hood is gone and not one in manual, or online apparently. It popped off when I was pulling into my driveway(thank God). I I need to know which one it is. It looks like I will have to tqke the motor mount loose to get it out, I think it is the idler pulley, I think any help would be great.