Re: A/C programmer confusion?

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

On Mon, 23 Oct 1995, Chris King wrote:

> having is when let's say the outside temperature is 55-65 degrees, but yet
> the car has been sitting in the direct sunlight, so it really feels hot
> enough to turn the cold air on.  The programmer "lever" (thing with the
> cable on it) will move to the right, forcing out piping hot air.  If I open
> the glove box and reach in there and gently nudge the lever to the left, it
> starts to move without any further assistance until cold air is coming out.

This is a common problem.  The cable is the actuator for the temperature
door.  This cable (called a Bowden Cable) has a reputation for stickiing
in the full-hot position.
	When this happens, the interior of the car gets too hot, so the
computer tries to reduce the temp door position, AND redirects the cooler
(ha, or so it thinks!) air to the A/C vents.  This is very annoying as I
don't like HOT air blasted in my face.  You can see this in the HVAC
diagnostics.  The temp door position COMMAND will be different from the
ACTUAL position. 

> It's as if the lever gets stuck and just needs a helping hand.

Exactly.

Later,											
Graydon D. Stuckey										
graydon@apollo.gmi.edu								
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage II				
'83 Mazda RX7 w/13B, GDS Racing Stage 58474