Date: Thu, 24 May 2012 12:21:26 -0800
Reply-To: Mark Tuovinen <aksyncronaut@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark Tuovinen <aksyncronaut@GMAIL.COM>
Subject: Re: 86 Syncro 2.1 surging at 2K rpm no load
In-Reply-To: <CAB2Rwfjzz1u2XBe4qTW94S3k4rQCfVJWGX5vatABO1yEHEHM-g@mail.gmail.com>
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I am even more glad he took the time to investigate and found the problem
as it is my van and we are flying in Monday to pick it up and drive home as
the last leg of the roadtrip we took this winter.
Mark in AK
On Thu, May 24, 2012 at 11:06 AM, neil n <musomuso@gmail.com> wrote:
> Good to know. Thanks David.
>
> Am still tracing down some *minor* running issues including a slight
> bucking at low RPM, parking lot speeds. It was interesting to see how
> "clean" the switch cam looked when I popped the TPS open.
>
> Apologies for the hijack, glad you found the issue Darryl.
>
> Neil.
>
> On 5/24/12, David Beierl <dbeierl@attglobal.net> wrote:
>
>
> > At 12:38 PM 5/24/2012, neil n wrote:
>
> >>When checking the TPS with VOM (continuity at idle)
>
>
> >
> > The problem here is a switch that's not opening, rather than not
> > closing. Much less common, rare even. Or a wire could be shorting to
> > ground.
> >
> > But yes, there has to be enough slack/easy enough operation of the
> > throttle cable for the throttle to close against the stop even in
> > cold weather when the pedal is gently released. Even more of an
> > issue with the A/T where the cable stops at the kickdown lever on the
> > transmission and has to operate that as well. And in principle the
> > switch adjustment should be made with everything shut down and
> > preferably out of the vehicle where you can free up the adjusting cam
> > and make sure everything is all right before you ream out that soft
> > aluminum hex socket on the cam (one-switch verseion). But when the
> > throttle body is worn you often have to make the adjustment with the
> > engine running. Either way the two-switch people have it a lot
> > easier than the one-switch. Everything is big and sturdy and out in the
> > open.
> >
> > Yrs,
> > d
> >
> >
>
>
> --
> Neil n
>
> 65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp
>
> '88 Slate Blue Westy to be named.
>
> '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
>
> Vanagon VAG Gas I4/VR Swap Google Group:
>
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>
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