From: Wally Plumley [wplumley@avana.net]
Sent: Saturday, May 13, 2000 8:41 AM
To: 928
Subject: [928] Re: climate control Problems - Advice Please

At 11:05 PM 5/12/00 +0000, Jerry O wrote:
>I have hot air coming out the bottom center vent but only when the climate
>control is placed in the 2nd from the left slot.  I replaced the valve and
>I recently had a new climate control installed.  With the air on it does
>blow cool but not cold - the rear air is actually colder.  The Porsche
>dealer says it needs a new servo (dont know what this is).  The vent inside
>is now blocked open permanently to try to keep the air cold.  I read all
>the posts on air conditioning but cant figure out what to do.
>Advice please.

Adjust the Temperature Setting Flaps and Setting Motor
1) Set system to max cooling.
2) Remove the side console panels (two Phillips screws each side, pull down 
and back). Disconnect link to setting motor (box on left side).
3) On right side, find a short lever on top and a short lever on the bottom 
connected by an adjustable link. Loosen the screw in the link.
4) Press the top lever as far forward as it will go, press the bottom lever 
as far down as it will go, and tighten the screw with them in that position.
5) Turn setting motor link until the holes align and reinstall link.

If that doesn't help -
1) Go an auto parts store and buy a MityVac vacuum tester.
2) Remove the air cleaner assembly and test the heaater control valve using 
the MityVac. Replace if bad ($11.28).
3) Remove the side console panels (two Phillips screws each side, pull down 
and back). Find the vacuum manifold. Take a digital photo or make a 
detailed list of where each hose attaches to its solenoid.
4) Test each vacuum actuator individally by disconnecting the hose and 
using the MityVac. The actuators cost less than $20 each. Some are easy to 
replace, some are a pain. There are discussions in the archives and on 
Greg's tip page and the Owner's Club tip page.

Wally Plumley
928 Specialists