A/C op. 87 5KTQ

[Paul Meyers]

Definitely the vacuum supply and not the controller. You have a vacuum leak.
Coasting, of course, creates a more robust vacuum, used by the programmer to
control actuators that open and close air flaps in the AC system.

Paul Meyers 
Gray 87 5KCSTQ 1.8bar eurolights fuchs 145 kM, replacing electronic ignition
loom 
Pearl 88 5KCSTQ 1.8bar eurolights fuchs bilsteins 128 kM 2pc-em k24 turbo 
Repainted Pearl 87 5KTQA 1.8bar eurolights TT wheels bilsteins 200 kM daily
driver
Blue 86 5KCSTQ parts car 



-----Original Message-----
From: John Larson [mailto:j.d.larson at verizon.net]
Sent: Monday, May 07, 2001 4:04 PM
To: quattro at audifans.com
Subject: A/C op. 87 5KTQ 


We've discovered an interesting feature of this A/C operation..... works
only thru the defroster vents unless you go into the coasting downhill mode,
at which time it blows normally thru the proper vents.  Vac supply?
Controller? I havent had to do much HVAC on any of the Audis I service and
haven't paid much attention to the subject in the past.  Suggestions
appreciated.  Thanks, John