Re: Ghost in the climate control

[Robert W Obrien <rwo@u.arizona.edu>]

On Tue, 16 Sep 1997, Robert Russell wrote:

>  In the 89 200q set on auto at 65/ a/c and the thing blows nice and cold
> With a strong fan.
> Within a minute or so the air flow shifts to the derfost and floor vents
> ...huuh.
> By using the high / low fan speed I push the low button and the flow
> returns to the a/c vents. Low fan dosent cut it at 85 in a suit. so I go
> back to high same thing happens, but this time I have to go to econ to
> get the vents to return.   Just one of those Audi things. Part of the
> whole appriciation thing I think. However... anyone have an
> idea?????????
Yes. Bad programmer in the AC. But mine did the same thing exactly (and
you should try 116 degrees wearing a suit with the low speed fan. In a
Naut Blue 5k w/ matching leather.)

Not wanting to replace this part for upwards of $100 (I can't remember how
much) and noting that the proper vacuum doors *will* function, but they
get the "wrong" signal from the programmer, I poked around under the dash.
Now, on a 200q, the lines may be different colors or differently located.
But I found that, observing the door opening on "LO" which allows cool air
to the dash- plugging the red vacuum line (as well as the white one it
connected to) kept this door open, flowing air normally. Strangely, all
functions of the AC seem to work normally. I will however remove the two
screws and reconnect the line when AC season is over (about six weeks here
in the desert).

On my 1987 5k, these lines were connected to the vacuum flaps directly
behind the radio. I removed the glovebox and the side of the console to
gain access without disturbing my, um, "secure" mounting of the Kenwood
(aircraft-grade fasteners and steel plate). AFAIK, the 200 has a similar
design (the AC, not the radio) although the dash is different.

 > Thanks, Bob Russell  89 200q
> Been gone a while.. I know, no one cares.
> Hi to R. Myers
> 
> 
Regards,
Rob
1987 5kcst, 170k