My alternator belt came off while I was driving, How do I put it back on, Its hard to see it because it happened at night but I saw a tensioner, is the tensioner spring loaded and can I get it from the engine compartment or do I have to take out the fender liner. The belt looks like its in good shape. Can help you guys can give will help me out, the car is stuck on the side of the road, so I'm hoping to be able to fix and drive it home and not get a tow.