Just got my exhaust put on, installed my intake today, everything was going fine. I had the A/C on, since its +38 with the humidex. All of a sudden I hear a grinding/crunching sound, and the A/C, Vent, Defrost etc... is all dead. My friends looks to the ground in the passnger seat, and there is black cap of some sort sitting there that seems to of fallen when that noise occured from under the dash. He puts it back where it belongs, I go to a my other friends garage, he said it might be my fan that is dead, and to come back tomorrow morning. I am wondering if anyone else has had this, and if there is anything other than the fan that could cause this?