Having problem with vent. system. All the options work, the vacuum actuators are working, pulled the squirrel cage fan, works fine. Pulled the top part of the dash off to look for lodged object ( rag, etc. ). Cannot see anything in any vents. Could one of the flaps or linkages be broken from the actuators, not opening? There is vacuum going to each actuator.
What else could it be? Is there a filter clogged that I don't know about?