All heat, all the time

[zencalc]

Hey, I'vwe got an interesting (ok aggravating) problem that's just started. My 96 5.0 XLT is blowing hot air under all setting of the heater control knob. The only way to stop it is turn the setting to "off".
What's going on, and how do I fix?
Thanks, I've learned a lot hanging out here.

Z.:roll:

 

[budwich]

Well, I guess you need to hang around a bit more.... try the many posts on blender door problems.

 

[zencalc]

Blend door

Hey, I found a few of them, thanks!
I'll try that this week-end.
If anyone else needs it, here's the fix. http://www.blenddoorfix.netfirms.com/
Z.