Date:         Sat, 30 Dec 2006 22:31:27 -0500
Reply-To:     David Milo <dellaone@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Milo <dellaone@GMAIL.COM>
Subject:      Re: Failure to return to idle
Comments: To: mordo <helmut.blong@gmail.com>
In-Reply-To:  <de48c0be0612301919r78208c9dhd54aa0b34c34e9ea@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi Mordo,

The long run inside the white tube isn't so much the problem. The problem is
where it goes into the black conduit, and transitions upwards to the
throttle relay lever on the auto transmission. That is where there is a
natural low spot, and where the moisture rusts the cable.

Cheers,

Dave

On 12/30/06, mordo <helmut.blong@gmail.com> wrote:
>
> Hey, DAve, thanks. That's what I'm thinking too. That long run of cable
> seems like a lot of ooportunity to get hung up. So far, not such a problem.
> More of a niggling bother because it just isn't right.
>
> ciao.
>
> m
>
>
> On 12/30/06, David Milo <dellaone@gmail.com> wrote:
> >
> > Hi Mordo,
> >
> > I think it's new throttle cable and rear conduit time. I had this
> > problem with a '91 Carat automatic, and the cause was moisture getting in
> > the rear cable sheath, rusting both the cable and the inner sheath. In my
> > case, the rubber sealing hose between the white plastic throttle cable tube
> > and the forward end of the black flexible throttle cable conduit (under the
> > van, just ahead of the transmission; the cable conduit forward end is bolted
> > to a frame crossmember) had shrunk and slipped off the forward end, allowing
> > water in, rusting as above.
> >
> > I tried all kinds of different lubes, but I ultimately found that the
> > rusted cable had torn up the plastic liner inside the rear cable conduit,
> > and this was causing the cable to hang up. Replacing the cable won't alter
> > the basic idling speed, but it will prevent it from hanging up.
> >
> > Good luck,
> >
> > Dave Milo
> >
> > On 12/30/06, mordo <helmut.blong@gmail.com > wrote:
> > >
> > > I have a not-so-much-annoying-but still puzzling issue with my 90
> > > Carat,
> > > 2.1l wbx with AT:
> > >
> > > It generally idles a bit high - at about 1000rpm. I haven't gotten
> > > around to
> > > adjusting it down. But, when I put the trans in neutral or in park,
> > > the
> > > engine is turning at about1600-1700 rpm. If I tap the accelerator
> > > pedal, it
> > > will drop back down to its typical 1k rpm idle. When I come to a stop
> > > at a
> > > light or stop sign, the engine pushes hard against the brake and the
> > > idle
> > > holds at about 1100 rpm.
> > >
> > > The pedal requires above-average pressure to hold speed while highway
> > > cruising but does not otherwise seem unreasonably stiff for a linkage
> > > that
> > > runs such a long distance. I've never driven another Vanagon enough to
> > > know
> > > what normal feels like.
> > >
> > > Engine idles and runs well, good acceleration, easy cold start, easy
> > > hot
> > > start.
> > >
> > > So, do we think the problem lies with the mechanical linkage anywhere
> > > from
> > > pedal to throttle body or do we think vacuum-related or do we think
> > > something else entirely?
> > >
> > > --
> > > mordo
> > > 1990 Carat
> > >
> >
> >
>
>
> --
> mordo
> 1990 Carat