it could have gone to an aux heater at one time. it wont work unless you
push in and turn, or turn it while the van is running, if it still works.

Kellen Dengler wrote:

> Hi,
>
> I'm new to the list and tried searching through the archives to find an
> answer and had no luck. I have a 1980 Westfalia. It has no AC. When I
> bought
> the van there was a knob missing just below the temperature control
> panel.
> It is centered right below it. Since I have no AC I can't figure out what
> this missing knob is for. I searched all over for replacement parts and
> found no luck. I don't even no what this missing piece controls. I've
> tried
> turning the dial with the vehicle on and adjusted the temperatures and
> everything else and I couldn't get any response. I hope someone out there
> has a van similar to mine and knows what this missing knob is and what it
> contorls. Any help is much appreciated.
>
> Thanks,
> Kellen
>
> Tempe, AZ
> 1980 Vanagon
>
>
>
>