Good morning to all!!,My 97 defroster fan selector is blowing only to defrost (assume that is default location) My question is how do I find the vacuum leak that may be causing my lack of selection from vent to floor or defrost ETC??? I saw in the archives a thread that confirmed my thoughts. Can anyone shed some light?

Update :biggrin: I found the leak the small tube that connects on top of the vacuum fitting on the manifold, had rotted and broken. I replaced the tube between the rubber hose and the rubber fitting. OK thanks