Date: Sun, 8 Jun 2003 18:42:53 -0500
Reply-To: boroko <marokus@VOYAGER.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: boroko <marokus@VOYAGER.NET>
Subject: Re: Troubleshooting cruise control
Content-Type: text/plain; charset="iso-8859-1"
OK,
The stock Cruise control takes it's speed reading from the back of the
Speedometer. A reluctance pick-up is screwed into the back of the speedo
and can be seen with a small plug that has two wires on it. It is removable
with a small screw or two.
The pickup "reads" a small magnet or steel slug that is already part of the
speedo whether it came with CC or not. I installed a stock CC system on one
of my '87's that came from a junker and along with the rest of the system, I
had to add the sensor to the speedo. I think I found a sensor from a Jetta
or something of a similar year.
The system basically consists of:
The controls on the turn signal stalk,
a control module behind the glove box,
Vacuum switches on the pedals,
the speed sensor in the speedo,
a wiring pigtail that hooks into the brake light switches on the master
cylinder,
a pump in the rear valence on the right,
A vacuum diaphragm and brackets that hook to the throttle arm,
and, two plastic vacuum hoses that feed vac to the pedal switches and
(if they are held closed by the pedals) communicates that vacuum back to the
pump in the back and the diaphragm.
The chassis wiring was already present in mine from the fuse box area to the
pump. All I had to do was add the harness for the control box, brake
switches, and the control box. Mount the pump and diaphragm, pedal vac
switches, and the control box, and plumb the vacuum lines.
The confusion may come in from Cruise Controls that were not stock. Since
they could not depend on a standard for speed sense on different vehicles,
they usually mount magnets on a drive shaft and get their speed signal from
there.
There may be other configurations that I'm not aware of, but that's my
input.
Mark Rokus
----- Original Message -----
From: "Zoran Mladen" <zmaninco@yahoo.com>
To: "boroko" <marokus@VOYAGER.NET>
Sent: Sunday, June 08, 2003 4:06 PM
Subject: Re: Troubleshooting cruise control
> Hey there,
>
> Ok, tell me about these magnets. I have another guy
> telling me I need the magnets (which are not there,
> nor is the mechanism to register them).
>
> Help!
>
> Thanx!
>
> Z
>
> --- boroko <marokus@VOYAGER.NET> wrote:
> > Hi Z,
> > The most common trouble that I have had with the
> > cruise is the vacuum
> > switches that contact the pedals not being held
> > closed enough. On mine,
> > there was enough freeplay in the clutch pedal that
> > if you let go of the
> > pedal hard enough (let it rebound without your foot
> > on it) it would move the
> > switch in it's holder enough to not hold the plunger
> > tight. I reach down
> > and re-adjust the switch and the cruise works again.
> > I should re-bush the
> > pedal pivots and get rid of the problem, but like
> > most problems, now that I
> > know what is causing it, I'm not as worried about it
> > and I can get to work
> > for trips until I get to it.
> >
> > BTW, the speed pickup for a stock cruise is in the
> > back of the speedometer
> > and does not require external magnets.
> >
> > Mark Rokus
> >
> > ----- Original Message -----
> > From: "Zoran Mladen" <zmaninco@YAHOO.COM>
> > To: <vanagon@GERRY.VANAGON.COM>
> > Sent: Sunday, June 08, 2003 1:43 AM
> > Subject: Troubleshooting cruise control
> >
> >
> > > What do folks recommend?
> > >
> > > I verified that the column switch is working
> > properly.
> > > As well, I checked the wiring at the control
> > unit,
> > > and the proper hot wires and grounds are there.
> > >
> > > How should I go about troubleshooting the system?
> > >
> > > Z
> > >
> > > __________________________________
> > > Do you Yahoo!?
> > > Yahoo! Calendar - Free online calendar with sync
> > to Outlook(TM).
> > > http://calendar.yahoo.com
> > >
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Calendar - Free online calendar with sync to Outlook(TM).
> http://calendar.yahoo.com
>
| 
