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Old 06-14-2018, 06:10 AM   #1
Steve Beswick
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Join Date: Feb 2017
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Default Vacuum vent controls wonky, need quick and dirty fix

So the vents on my 940 only work right under maximum vacuum. I need to fix them properly, but I was hoping someone had a temporary, non-destructive way to jam the flapper dash vents open. Any ideas?
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Old 06-14-2018, 09:49 AM   #2
kzoc
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Gold tee in the (I believe) yellow vacuum line.
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Old 06-14-2018, 11:11 AM   #3
Steve Beswick
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Quote:
Originally Posted by kzoc View Post
Gold tee in the (I believe) yellow vacuum line.
In the yellow line behind the dash, or???
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Old 06-14-2018, 12:10 PM   #4
kzoc
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On the drivers side of the center console, just in front of the drivers right knee. You'll have to take of the left side panel of the center console. You'll see a black, hockey puck-looking thing with vacuum lines going to it. Plug the yellow line with a golf tee and see if it fixes your problem. If not, try a different vacuum line.
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Old 06-14-2018, 02:04 PM   #5
PCH
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I just plugged the yellow line on mine. There is a low cost (about $30) AC Delco part# 15-71438/GM# 1996732 alternative to the Volvo diaphragm. Will try to find the thread on this.



From https://ozvolvo.org/discussion/3181/...-hvac-controls

Last edited by PCH; 06-14-2018 at 06:28 PM..
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Old 06-14-2018, 06:32 PM   #6
PCH
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Pictures comparing GM and Volvo part https://www.vrcf.fi/foorumi/index.php?topic=25022.60
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