Ok....I will check the vacuum hose today...if my AC vacuum is connected to the engine connector, where should it be connected? or how can I test it?
As far as the vacuum pump in the trunk, I can hear the one for the power door locks....and it buzzes constantly...when the car is on....is there another one? Or is the one for the door locks the same one....I think there is something wrong with it because it is always buzzing, and shouldnt it only make noise when you lock the doors?
1998 ML 320
1994 Blue C220
Im going to Grad School @ the University of Iowa