Hollow Sound ('86 5kTQ)

[Max Hoepli]

This involves the defrost and footwell servo C according to Bentley on page
87.15, 87.16, 87.127. Mine functions. Don't know exactly what problem could
be. Could be broken off, problem at solenoid.

With servo A, in my case the servo breaks off from arch support, not seen in
Bentleys diagram. The solution is keeping flap in fresh air open setting, at
least windows will not fog BUT the airconditioning won't be so cold in
summer since fresh hot air is pulled in.


Max

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of JeffreyZentner at aol.com
Sent: May 11, 2008 09:41
To: quattro at audifans.com
Cc: audi_owners_usa at yahoogroups.com; w-t_audifans at yahoogroups.com
Subject: Re: Hollow Sound ('86 5kTQ)

 
 
I have a similar problem where all of the air coming through my heater box 
is going to the wind shield vents. Is this a common problem? and what is the
fix?
 

Jeff Zentner
Alta CA

88 5KTQ

"Life is easier if you learn to plow
around the stumps"
 

In a message dated 5/10/2008 8:36:52 PM Pacific Daylight Time, 
mhoepli at vif.com writes:

The spring was missing, but was replaced. My mechanic luckily had 5 at his
garage. I also brushed off and vacuumed out the dirt and leaves in the AC
chamber. 

Max

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of urq
Sent: May 10, 2008 20:16
To: quattro at audifans.com
Subject: RE: Hollow Sound ('86 5kTQ)

... ah yes, it's been so long I had forgotten!  This is a classic problem on
the T44 of your vintage.  I've even got the service bulletin in the folders
here somewhere.  What happens is the seal shifts and the recirc door sticks
shut.  When the HVAC tries to open it the vacuum motor mounting isn't strong
enough and the vacuum motor rips free from its moorings.  If your recirc
door is floating free it means that the spring is probably broken as well.
Do an archive search on recirc door for more info.  Funny, I did a spring on
one of the V8s not that long ago, I don't know why it didn't come to mind
earlier.  

Steve B
San José, CA (USA)

-----Original Message-----

I removed servo A illustrated on page 87.15, 87.22 & 87.23 in Bentleys from
under the thin plastic panel behind fire wall. When I moved the servo, the
servo made the same noise when I drive and hits bumps. Servo A controlling
the fresh/recirculation air flap right behind the evaporator coil broke off
from the arch support, which is not illustrated in Bentleys, looks weird in
Bentleys. Since the servo broke off the fresh/recirculation air flap is
always closed to prevent steamy windows when heating. Very difficult to
repair this servo connection. The servo is also called a vacuum motor in
Bentleys. There is a hose connected to the servo controlled leading to
solenoids under right dash from a vacuum chamber. 

When I drive I hope I just hope there in no more such noise

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