[V6-12v] Cruise control on a 1994 90S

[David Torrey]

David Torrey <davidtorrey2004 at yahoo.com> wrote:    Hi Folks -
   
  The cruise control on my 1993 100 CSQ Avant is no longer working either.  I just replaced the valley pan gasket and replaced all vacuum lines.  Still no cruise control.  It used to work intermittently once the engine warmed up.  Whatever that means.  I have however, eliminated the check engine light from coming on by replacing all vacuum lines.  I suspect now the problem is electrical.  If I am able to solve it I'll let the list know.
   
  Best regards,
   
  David Torrey
  

Tom Christiansen <tomchr at gmail.com> wrote:
  James, Mark,

Both of you provided good suggestions. I'll investigate further.

Tom

On 11/12/06, James Whitehouse wrote:
> Tom,
>
> What generation car do you have? I don't know if yours is electronically
> controlled or not. I've just cured the cruise control on my Mum's 'fly by
> wire' Golf Mk.IV by replacing the clutch switch. This is a little electronic
> push-in switch, that sits high up in front of the clutch pedal, which tells
> the cruise control when the clutch is depressed. If the switch goes bad, the
> cruise control 'thinks' the clutch is depressed and will not go into cruise.
> This can also often cause some hesitation under acceleration, apparently.
>
> The other culprit can be the little plastic 'switch end stop' which sits on
> the pedal itself in front of the switch and presses it in slightly further.
> If this breaks, the switch won't register as fully 'up' because those
> switches, when you install them, rachet up initially to calibrate the start
> limit they operate from. In fact if you need to replace the switch email
> again and I'll give you step-by-step instructions, as I broke a switch
> before I worked out what was going on (fortunately they're only £10).
>
> A similar fault can be caused by the brake switch. If the brake switch
> fails, you'll either get no brake lights or brake lights all the time, so
> that one's easy to diagnose.
>
> Just a couple of possibilities.
>
> James
>
> > -----Original Message-----
> > From: v6-12v-bounces at audifans.com [mailto:v6-12v-bounces at audifans.com] On
> > Behalf Of Tom Christiansen
> > Sent: 12 November 2006 07:08
> > To: Audi list
> > Subject: [V6-12v] Cruise control on a 1994 90S
> >
> > Folks,
> >
> > Does anyone know how the cruise control system works? Mine has stopped
> > working. When I push the set button nothing happens. And... yes I've
> > checked the on/off switch is indeed in the on position...
> >
> > Tom
> > _______________________________________________
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