I think the idle stabilizer system boosts RPM on three occasions:

1) Cold Start
2) When power steering hits the limits and the pump tries to stall under
the load.
3) When slowing down with AC on - the system will raise the RPM to 1500
to keep the AC running without stalling the engine.

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 7/26/2011 7:25 PM, Steve Williams wrote:
> Does the '84 Westy stock air conditioner have a way to boost the idle
> when the compressor is engaged?
>
> If so, what's the mechanism?  Is it called an "idle stabilizer," or
> something else?
>
> I did search for the answer, but couldn't get a clear understanding.
>
> (In my '84 Westy, there's no idle boost when the compressor is
> engaged.  Very inconvenient.)
>
> Thanks for sharing your expertise!
>
>