Mikehena. Your problem sounds like it is one of several vacuum mode actuators. The one your talking about is not located behind the glovebox as the one on the left behind the glovebox is for the panel/vent and on the rear right for the fresh air/recirc door. The vacuum actuator that controls the defrost/floor door is located in the back between the instrument cluster and the radio. If you remove the radio and heater controls you should be able to see the vacuum actuator move when you move the mode selector between floor and defrost. My situation caused just my floor and defrost modes to be mixed at all times only when on either of the two. All of the other modes operate fine. I believe it is the yellow vacuum line. My actuator was good, but the plastic door hinge that connects to the actuator is broken. To the best of my knowledge you have to remove the dash to repair this. If it is only the actuator and not the door like my problem, you may be able to remove the instrument cluster and radio/heater controls to install a new actuator. I am planning to pull my dash when the weather gets a little better to fix both the broken floor/defrost door and also my fresh air/recirc door is broken as well. I'll probably look for a heater plenum from a salvage yard. Anyone have any suggestions on this? I'm not sure if the fresh air/recirc door is part of the plenum or a separate part? Thanks!
