I would start by looking at your idle control relay (behind tail light)
Look and see if it is an ( A or C ) or ( B or D) . The A/C is DJ . These
play a huge part in the proper idling of these engines . The  B/D will work
but it idles at a different RPM .
    When these are bad it takes good information and puts out a bad signal
. I would be tempted to borrow a B/D and see if it smooths out your idle .
I run my DJ with a full MV system ,02 sensor and cat .

                              Stacy

On Fri, Feb 21, 2014 at 1:20 PM, Chris S. <szpejankowski@gmail.com> wrote:

> This a DJ code ECU, harness, and all systems as they were in the donor
> vehicle. So no O2 to worry about or wiring mishaps, as things were fine for
> several years until winter.
>
> Thanks for bringing up the Temp 2 sensor - I will test that!
>
>
>
> Chris.
>
> Wysłane z iPhone'a
>
> Dnia Feb 21, 2014 o godz. 16:11 Dennis Haynes <d23haynes57@hotmail.com>
> napisał(a):
>
> > Most likely you have a bad idle valve controller. There are a number of
> outside factors that can cause this. Temp 2 sensor goes to the ICU and if a
> 2.1 system was added to a 1.9 ECU may be part of the problem. A bad ground
> for the temp 2 sensor can also be a problem along with the sensor itself.
> >
> > Dennis
> >
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Chris S.
> > Sent: Friday, February 21, 2014 3:33 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Idle question
> >
> > My '84 with DJ code WBX has an interesting issue. The idle control
> system is same as a 2.1l MV. It idles high, but when I unplug the ICV it
> purrs like a kitten at proper rpm. Plug ICV back in and it shoots up again.
> I've set and reset idle a few times now after I cleaned ICV internals.
> >
> > Any ideas?
> >
> > Chris.
> >
> > Wysłane z iPhone'a
> >
>

-- 
   1989 Swedish Tristar with Aluminum gates and Atiwe 16" Wheels.
    Oldest son is an Eagle scout.