Today I decided to put in my 180 T-stat, when I lifted the wow did it stink it smelt like I had a pile of cow sh*t brewing. My s/c is leaking from somewhere in the area where the pulley is mounted. What could be the problem? It's not a small leak, by the looks of it I doubt there is any s/c oil left in it, I haven't driven the car since I noticed, but the damage my be done already. Any help would be appreciated.