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Old 06-13-2012, 06:32 PM   #1
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AC help

Ok as explained before in another thread, my AC only comes out of the defrost and floor vents and will not switch to the dash vents. As suggested in the other threads I've pulled the AC controls and glove box and confirmed that the red, white, blue, black and yellow all are intact and attached.

I can reach in and move the flap inside the vent tunnel and the air blows out of the dash vents but stay open..

Experience? Suggestions? Thanks guys.
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Old 06-13-2012, 06:34 PM   #2
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I haven't messed with them personally. But I do know that the vents are vacuum controlled. I would track down the vacuum lines and see if one is disconnected.
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Old 06-13-2012, 06:36 PM   #3
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Quote:
Originally Posted by dreamstang
I haven't messed with them personally. But I do know that the vents are vacuum controlled. I would track down the vacuum lines and see if one is disconnected.
There are two I can not see the end of. They leave the controls into a block then out again behind the vent tunnel can't see where they go
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Old 06-13-2012, 06:40 PM   #4
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maybe these will help?
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Old 06-13-2012, 06:47 PM   #5
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Quote:
Originally Posted by dreamstang
maybe these will help?
Looks like maybe the vent/defrost vacuum motor
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Old 06-13-2012, 06:50 PM   #6
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i wonder if you could take it off and clean it up? or at least inspect it for wear or failure.
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Old 06-13-2012, 06:59 PM   #7
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There is no vacuum there or at the other one behind the glove box. Looking at the second pic I'm wondering if the issue is no vacuum from the engine compartment.
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Old 06-13-2012, 07:03 PM   #8
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Have you checked at the vacuum tree?
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Old 06-13-2012, 07:14 PM   #9
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i think its gonna be in the area of what slowsatng says. the vacuum lines have a rubber coating on them. you may have to peel of the rubber, (if it has it) to inspect the lines.

http://www.allfordmustangs.com/forum...ol-issues.html
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Old 06-13-2012, 08:18 PM   #10
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The hard line from the tree to the coupling was broken at both ends.. Rather then reuse the fittings and line I went and got a new hard line and fitting.. Works great now! Thanks for the help guys!
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Old 06-13-2012, 08:19 PM   #11
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Your welcome. Glad you got it taken care of.
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Old 06-13-2012, 08:23 PM   #12
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Quote:
Originally Posted by dreamstang
Your welcome. Glad you got it taken care of.
that second pic made troubleshooting it back to the engine compartment then to the tree fairly easy! Took longer to put the dash parts I didn't need to remove back then it took to replace the line lol
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Old 06-13-2012, 08:30 PM   #13
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Glad you got it fixed.
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