Are you sure?

I'm not quite sure witch parts you are referring to,
but my '88 Digifant has an idle stabilizer valve, and idle stabilizer control
unit.
The control unit is hooked to the Hall sensor, and also the stabilizer valve.
You can see the valve on the Digifant diagram on page 24.46

The Digijet systems use an auxiliary air regulator.
However the Bosh book paragraph I quoted is not referring to the systems with the

auxiliary air regulator.

The paragraph starts: "The idle speed stabilizer replaces the auxiliary air
valve..."
The photographs following show a unit similar to the Idle stabilizer valve in the
Vanagon.

Are we using the same terminology?

Todd

David Beierl wrote:

> At 06:30 PM 1/12/2002, Todd Last wrote:
> >According to the Bosch fuel injection book, you are correct.
> >The idle stabilization unit is always active.
> >
> > From the BOSCH book page 26
> >
> >"The opening of the idle-speed stabilizer depends on the percent dwell - the
> >on-off ratio - of the digital control signals from the control unit... The
> >greater the on-off ration the further open the stabilizer and the more air
> >will
> >bypass the throttle. For a warm engine at idle, the stabilizer is open
> >part-way
> >with a typical dwell of 32%. You can use a dwell meter to measure the on-off
> >ratio...
>
> Todd, this refers to the Digifant idle stab valve with controller, *not*
> the Digijet idle stab timing-adjuster.  Completely different animals.
>
> david
>
> --
> David Beierl - Providence, RI
>   http://pws.prserv.net/synergy/Vanagon/
> '84 Westy "Dutiful Passage"
> '85 GL "Poor Relation"