does the idle switch make contact at idle ?
does it click when you just barely open the throttle by hand, at the
engine, ( engine off  ) ? It should.
if it doesn't do that, it's likely not making contact.  I've probably
done that repair at least 100 times on waterboxer vanagons with the
swtich on the bottom of the throttle body.

'most' on 2.1's don't after this many years of operation.
I'd venture to say upwards of half of 2.1's ( and 85 1.9's with the
later style 'underneath' throttle switch are not making contact at idle.
On 5/4/2014 7:51 AM, Mike Holm Toronto wrote:
> Cool. I'm still working out the possible reasons for my idle sitting at 2000rpm. I cleaned the Idle valve (which has been unplugged and taped up by previous owner) to no avail. Another one is being posted as we speak but if the problem is in the module, it would be good to know and figure out how to fix it. The modules are a bit costly so i hope it is not that.
>
> Mike
>
>
> -----Original Message-----
> From: "Neil N" <musomuso@gmail.com>
> Sent: Sunday, May 4, 2014 13:38
> To: mike@bosssolar.com
> Cc: vanagon@gerry.vanagon.com
> Subject: Re: Are all 2.1 engines digifant?
>
>
>
> >From the factory, yes. But.....
>
> I've read of 2.1 engines installed in Digijet Vanagons. The owner
> keeps the Digijet system adapting it to the 2.1 This may be true the
> other way around (1.9 with Digifant) but far less likely.
>
> Neil.
>
>
>
>