Ken,

Check Bentley 24.51.  It shows disconnecting the ISCV connecter, the yellow
plug on the left toward the front of the engine compartment, and the O2
sensor.  I have checked my O2 sensor output with a multimeter.  When the
vehicle is running open loop, I run rich, in the .8 volt range.  Once the
engine goes closed loop I am running at .5 volts, exactly where I should be.
Idle speed is right about 850 RPM.  If I reconnect the ISCV plug, the engine
continues to idle just fine until I drive around for a while and then come
to a stop again.  Then the surging and fast idle problems reappear.

----- Original Message -----
From: "Ken Lewis" <kdlewis_wasting_time@ACCESS4LESS.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, September 15, 2003 3:40 AM
Subject: Re: Idle stabilizer question...

> Chad;
>     I see now we are not talking about different things. It sounds like
you
> have the idle set too high i.e. too much air getting in at idle. I bet if
> you monitor the Oxygen sensor's output you would see a corresponding rise
in
> the voltage to the surge in rpms.
>     What page do you see that about disconnecting the ISCV? I do not
recall
> the procedure being worded like that. Then again maybe I am doing it
wrong,
> let me know.
> Ken Lewis
> 86 Transporter Crew Cab
> 60 356 T-5 Porsche
> http://neksiwel.20m.com/
> Vanagon tech, pixs, O2 monitor gadget
> ----- Original Message -----
> From: "Chad Morris" <chad@ALLMORRIS.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Sunday, September 14, 2003 3:44 PM
> Subject: Re: Idle stabilizer question...
>
>
> > I believe I am the one who made the comment mentioned.  If I am not
> > mistaken, Bentley says to set the idle speed with the ISCV disconnected,
> > which implies that it should idle correctly without the ISCV.  I did
this
> > and and mine idles great.  My problems begin when I plug the ISCV back
in.
> > I end up with surging and fast idle issues that immediately disappear
when
> > the ISCV is unplugged.
> >
> > My ISCV passed the continuity test and I can hear the thing click if I
> apply
> > 12 V DC, which leads me to believe that my troubles must be with the
Idle
> > Stabilizer Valve Control Unit.  I think that will be the next thing I
> > replace.
> >
> > Chad Morris
> > '89 Carat
> >
> > ----- Original Message -----
> > From: "Ken Lewis" <kdlewis_wasting_time@ACCESS4LESS.NET>
> > To: <vanagon@GERRY.VANAGON.COM>
> > Sent: Sunday, September 14, 2003 4:18 AM
> > Subject: Re: Idle stabilizer question...
> >
> >
> > > Jesse;
> > >     Check it again. Another listee made the statement he has been
> driving
> > > without the Idle Control Module plugged in (which, I believe, controls
> the
> > > buzzing) .
> > >     The engine on my 86 would not hold an idle when I tried it.
> > >
> > > Ken Lewis
> > > 86 Transporter Crew Cab
> > > 60 356 T-5 Porsche
> > > http://neksiwel.20m.com/
> > > Vanagon tech, pixs, O2 monitor gadget
> > > ----- Original Message -----
> > > From: "Jesse and Monica Johnson" <jjmojo@SUSCOM.NET>
> > > To: <vanagon@GERRY.VANAGON.COM>
> > > Sent: Saturday, September 13, 2003 6:32 PM
> > > Subject: Idle stabilizer question...
> > >
> > >
> > > > Hello Everyone,
> > > > When i was swapping out my throttle position switch...i noticed that
> my
> > > > idle stabilizer valve was not humming....so i checked the terminals
> and
> > > > there is continuity as per the bentley...but i am not getting a
signal
> > > > to the stabilizer...any advice on what to look for?
> > > > thanks everyone,
> > > > jesse
> > > > 89 carat...just keeps needing me more and more...
> > >
>