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A-Pillar "Y" Defroster Hose Connections
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bvd
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PostPosted: Mon Sep 05, 2011 9:57 pm    Post subject: A-Pillar "Y" Defroster Hose Connections Reply with quote

So I've made quite thorough use of the search function but still have a question I can't figure out.

My paper/foil hoses that run from the heater channel up to the "Y" have deteriorated, so I want to replace them. I've measured, and they appear to have an inner diameter of 1.5" (38mm). I also plan on replacing the hoses that come out the top of the "Y", as they smell moldy, and from what I can tell, they have an inner diameter of 1.25" (32mm).

What I'm not sure of, is that my "Y" has 3 outlets at the top, and the one in the middle is not connected anywhere. Could someone point me in the right direction, or show me a picture of where this hose would connect to?

Here are pictures of what I am referring to:

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a.wilson
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PostPosted: Mon Sep 05, 2011 10:08 pm    Post subject: Reply with quote

Not for sure certain, but think the middle hose routes to the center dash vent.
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vw_hank
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PostPosted: Mon Sep 05, 2011 10:34 pm    Post subject: Reply with quote

one go's to the corner vent, one go's to the center vent, and one go's to the defroster box.
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Paul Windisch
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PostPosted: Tue Sep 06, 2011 5:20 am    Post subject: Reply with quote

Correct, the center smaller diameter goes to the center vent in the dash.
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Glenn Premium Member
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PostPosted: Tue Sep 06, 2011 5:28 am    Post subject: Reply with quote

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neena
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PostPosted: Tue Sep 06, 2011 6:51 am    Post subject: Reply with quote

I wound up using only 2 of the 3, the center defrost and the corner defrost and plugged up the other both on the Y and the side of the plastic vent that connects up to the dash. I had really good defrost and great heat all last winter that way.

When set up to also use the dash vents I wound up with little heat from the dash and the defrost was so weak it was ridiculous. So much heat gets lost at the tentative connection between the plastic vents under the hood where they connect to the interior and spreading out the hot air 3 ways seems to be one way too many. But maybe I'm just full of hot air myself.
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retro1302
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PostPosted: Tue Sep 06, 2011 11:01 am    Post subject: Reply with quote

Wow....where did that parts reference/diagram come from? It it available somwhere?
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