Blend door issue I believe

[Whitaker717]

Hi guys, just got done doing a thermostat in the old 87 and when I went to turn the heat on, I have the def function, the heat function, but when I kick it to vent it stays coming out the bottom. I’m guessing a door is stuck or something. Where can I start looking? I hope I don’t have to try to take that dash off. Any help would be great. I did look through some old threads and couldn’t really find what I was looking for. Thanks 

[GonzoTheGreat]

I think that’s the vacuum actuator near your right knee when you’re in the driver seat, that opens the middle vents. 
 

I was able to get the arm back onto the actuator in the girlfriends XJ without pulling the dash. I think I pulled the lower dash though, for visibility. I remember it was quite unpleasant to access, but easier than pulling the whole dash.