Temperature Control Cable

WARNING: This page is about a different car, the 1995 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Slide temperature control lever to its maximum left and right positions. As temperature control lever is moved back and forth firmly, temperature door should be heard seating at both ends of travel.
If temperature door is not heard seating, squeeze glove box sides together to disengage tabs. Door will hang freely. Working through glove box opening, remove cable housing from metal clip on top of plenum by depressing clip tab. Pull cable out of clip.
Leave core wire end loop attached to temperature control cam on plenum. To adjust temperature control cable, move control lever to cool position and ensure it does not move.
Push cable housing (Black) to seat blend door (push housing toward door until resistance is felt). Install cable housing to clip by pushing it from top until it snaps into place.