climate control out of control

[Hans-J Tannenberger <hans@sequent.com>]

Since a few weeks I got a problem with my climate control in
an Audi 5000 CS Turbo '86. It works fine after a cold start.
But if I drive for a few miles, stop the engine and restart
it after a few minutes to continue my trip the climate control
acts up. Although it still shows 70 F it heats up constantly.
Even lowering the input to the minimal setting doesn't
help the problem. I also noticed that the temprature gauge is 
slowly fluctuating between the actual cooling temp and cold
when the system acts up, it's constant otherwise.

As a workaround I found: During driving turn off the ignition
for 1 sec to reset the electrical system. This usually cures
the heating problem and also brings the temp gauge into its
normal operation. Sometimes it has to be repeated however.
However once in a while when doing this the climate control
jumps to the real temp it was trying to reach (78 F). Then all
I have to do is lowering the input to the desired temp and 
everything works fine.

Has anybody else experienced the same problem. Is it just a flaky
connector? I cleaned the connector on the climate control
itself but without luck. Since the temp gauge is acting up
as well I also suspect the 4 wire temp sender in the engine
compartment. Any ideas?
Thanks in advance.
-- 
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 Hans-Joachim Tannenberger               //  PHONE: (503) 578-3781
 Sequent Computer Systems, Inc.         //   FAX:   (503) 578-5797
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 UUNET:       uunet!sequent!hans      //     15450 SW Koll Parkway
 INTERNET:    hans@sequent.com       //      Beaverton, Or. 97006-6063
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