Re: 5000CSTQ Heater Controls

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On Tue, 28 Jan 1997 nicosisj@ldcl1.dnet.dupont.com wrote:

> The electronic controls for the heater/ac system in my car have a problem.
> With the controls set at 72 the passenger compartment warms up in a normal
> manner.  As the the temperature reaches the set point(72) the fan speed slows
> down as it should but the air temperature continues to go up.  There appears to
> be no control on the air temperature.  I read some of the archives and recall
> something about a bowden cable and electric motor that control a mixing flap.
> Can anyone give me more specific info on these and can this be the problem with 
Sal,

	It does indeed sound like your Bowden cable is stuck.   My car 
did this for the last year, and a couple weeks ago, it really screwed up 
- the cable actually bent, so now its really stuck on MAX hot!

	Anyway, open your glove box and look up above the glove box, a
littel towards the outboard side.  You'll see a black box about 6"  square
by a couple inches thick, with a wiring harness, a bunch of vacuum lines,
and a cable that looks like a bicycle brake cable coming out of it. 
That's your "Programmer."  You'll see that the little lever that actuates
the cable (this is the Bowden cable BTW) will be pointing towards the
right rear wheel.  This is the full hot temp door position.  You might be
able to give that a push to make it go back to the cold side.  Then it
should control the temperature just fine until the next time it cycles to
full hot.  The cables get a little bit kinked, and then they seem to work
fine in the intermediate positions, but they stick whenever they go to
full hot. 

	The Bowden cable is less than 10 bucks (I bought one) and it 
looks like it isn't too bad to install (I haven't done it yet - too many 
more pressing needs - like an exhaust system!)

	If this is not what you find, then you have another problem, 
about which I know nothing.   :-)   Sorry.

HTH   BTW, I thought about direct emailing this one, but there hasn't 
been much discussion about this (at least that I read) so I thought it 
might be relevant to the rest of you...

Later, ---------------------------------------------------------- 
Graydon D. Stuckey 	'85 Mazda RX7 GS, no toys 
graydon@apollo.gmi.edu 	'86 Audi 5000 CS Turbo Quattro, has toys
Flint, Michigan USA	'89 Thunderbird SC, lotsa toys