Well, the AC stopped working a few years ago when my boyfriend and his friend took a trip down to the Mojave desert, so I'm not sure that would be related at all. As to which pully, umm.....I know that if your facing the car, you've got something like 3 circular spinning parts that have belts wrapped around them. The part that I noticed that had grey smoke with the belt was on the far left, (the circular part with the double belts). That is as best of a description as I can give for now. Hopefully it can get us somewhere. Thanks for the fast responce!

__________________
85 300D Turbo Diesel, Sedan. Federal Emissions. 283K.