It sounds like the cables on the mode control box have come loose.
One of two things happens to the cable that opens and closes all the mixing and outlet vents on the car. They either pop out of a metal clip, The one that flips the vent doors open and shut are under the dash on either side of the heater core box behind the stereo to the A/C controls. With the doors pushed shut and the A/C on defrost, push the cable tightly in the clip. You may have to push on the clip some to make it snug.
The other situation is not as common but involves a broken plastic clip in the mode control. In this case, the mode controller needs replacement.
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Thursday, August 25th, 2011 AT 12:08 PM