air won't come out of the vents on my dash but the blower works and the resister is brand new

2000 BMW 323
139,000 MILES
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SCARANO
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I change the final stage unit(resistor), I can hear the blower working, air comes through the floor vents strong, but weak through the defrost and not at all through the dash vents.. what could it be?
Oct 22, 2011 at 5:23 PM
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DOCHAGERTY
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Was this issue present before you changed the final stage unit?
Oct 25, 2011 at 10:04 PM
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SCARANO
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Yes and since I changed the resistor a have some air pressure but not much through the vents but still not much through the defrost. And I also checked the cabin filter. Its clean
Oct 26, 2011 at 9:58 AM
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DOCHAGERTY
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Thank you. The issue could be due to several things. How shall we proceed?
Oct 26, 2011 at 11:52 AM
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SCARANO
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Well I'm a novice mechanic, but I'm pretty good at thinking my way through tasks so any direction would be greatly appreciated. Maybe what to check next or the next 2 or three things. Thankyou for the replies this is great!













Oct 26, 2011 at 12:03 PM
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DOCHAGERTY
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The next step will involve the scanning of the IHKA system to see if there are currently present faults. Seek out someone locally with proprietary BMW scanning tools.
Oct 26, 2011 at 12:08 PM
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SCARANO
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Thanx! Will do. I was hoping to this on my own but technology wins again. Lol ill let you know how I make out
Oct 26, 2011 at 12:14 PM
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DOCHAGERTY
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OK
Oct 26, 2011 at 12:16 PM
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