I've also wondered if an ICV from another VW could be used.

If I recall, the electrical connector for this part on the Vanagon had
3 terminal positions; some have 3 wires to the connector, some have 2,
but model years '86 and '88, '89 in Bentley, show two wires to this
part. A few online Digifant and Digifant 2 diagrams show 2 wires to
this part with one showing a (+ I think) wire going from the ICV to
the fuse box.

As long as one had access to correct wiring diagrams, and optimally a
donor vehicle to test  the OEM wiring, I'd guess that correctly wiring
polarity to a substitute ISV would be easy. The pin numbers should be
labelled on the part itself or for sure on the connector. How
the(voltage?) to this part is controlled is a whole 'nother thing. The
Vanagon Digifant uses a separate computer along with inputs to control
duty cycle of this part. Digifant 2, appears to have that "computer"
built into the ECU. I guess it may just boil down to specs of each
ISV.

As a side bar, someone(s) on this list was working on an arduino
solution to the idle control computer. I know I met this person, just
can't recall his name right now.

Dang eh?    ;)

Neil.

On 3/10/16, Robert Ueltzen <robueltzen@gmail.com> wrote:
> I once used an IACV from Van on a 91 Jetta and it worked fine.  I imagine
> you don't have to limit your search to a Vanagon IACV; probably any VW
> model of that era used a compatible model with the digifant system.

--
Neil n

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