3 gen a/c vent problem

[wiz929]

I have a 2003 Ford explorer v 6 eddie edition with the digital climate control. Last summer I notice occasional when I get up to around 40mphr the a/c vent will change to the defrost vent and when I slow down it will turn back to whatever setting i had it on. Today it got worst i was wondering did anyone had the same problem? thanks

 

[gamecocks]

http://www.explorerforum.com/forums/...d.php?t=310876

check all your vacuum lines if this isn't the problem