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The air will only blow through the vents

(2005 Mercury Grand Marquis)
in Kansas City, MO on January 13, 2014
When selecting defrost, only a small amount of air moves thru, nothing thru the floor. All air comes out of the vents including heat. Anyone know of the solution for this or how to repair w/o ripping out the dash to repair or replace the blend door actuators?
Displaying 1 answers & 2 comments
Popular Answer
on January 13, 2014
Replace HVAC contorl, see youtube! It's about a 20-30 min job even for a diy'er. Just watch the video! Pay no mind to the repair yours video, REPLACE the control head!!
You got any auto repair skill?
on January 13, 2014
Thank you! Can you post a link to the video?
on January 13, 2014
Just enter this in the youtube search bar : replace ETAC control on 05 merc grand marquis.... Or crown vic either one. YOU do the searching! ......AH W.T.H. Here you go:
Reverse procdure to install.

Now, once the unit is removed the system can be tested with a mityvac to be 100% sure it is the problem. That is where you need skills. Or a mechanic!
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