Question about 1981 Ford F 150

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Air controls for solecter bar are at dash only

No mater where the the bar is air only comes out the panel vents.the vacuume switch is working because i can see +hear the arms that move the doors to switch them. do i have to take that whole duct work out, or can i do somthing else?

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It is Possible that the Blend Doors Are Moving but Possibly not far Enough and Also The Vacuum Diaphragms that do the Work Do get Dry rotted And Leak My Opinion for A Vehicle @ 28 yrs Old Can to have A Little Rotted Rubber.My OLD School Test For this was to Take A Small Hose Connected to Manifold Vacuum as A Test Hose and Check Each Port On the Selector Module (After Removal of it) to Check the BLEND DOORS this is A Last Effort Before Having to Take The Whole Assembly Apart.AFTER THIS I would Say that YES It would take some disassemble to Track Down the Problem. I Realy Hope this Leads you The Problem . Hopefuly it is a FixYa For you Have A Good Evening. rejakwilson

Posted on Feb 04, 2009

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I HAVE A 2002 FORD TAURUS 3.0 ENGINE. MY AIR ALL OF THE SUDDEN HAS STOPPED COMING THROUGH THE VENTS, BUT STRANGELY ITS COMING OUT OF MY DASH VENTS. I HAD STOP LEAK AND FREON INSTALLED AND STILL NOTHING,...


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