Driving my 2ltr dti last friday there was a terrible racket from the engine and finally the snake belt came off. The tensioner arm had a bolt hanging out of the side of it and it flopped about. Is this an easy fix or do I need to take it to a garage? The belt is still good. -- Regards Chris Details offered in this e-mail are those applying to my particular problem and may not apply to your circumstances. You should check with your main dealer.