[s-cars] Speedo Info Needed: how to calibrate/adjust

[James C. Mairs]

> Perhaps this is desirable since you might be able to turn a speeding
> citation
> into a faulty equipment plea.

I think I should find one of these ICs then, I normally could use all the
help I can get in that area...  =)

-Jim 

> -----Original Message-----
> From: s-car-list-bounces at audifans.com [mailto:s-car-list-
> bounces at audifans.com] On Behalf Of Tom Green
> Sent: Friday, August 17, 2007 12:05 PM
> To: s-car-list at audifans.com
> Cc: Tom Winter
> Subject: Re: [s-cars] Speedo Info Needed: how to calibrate/adjust
> 
> Hi Tom,
> 
> There is some instrument cluster coding in VAG-COM for 5 or 6
> cylinder cars
> IIRC.  That only affects the tachometer, though.  The speedometer is
> driven
> from the electronic pickup adapter on the transmission, and provides
> input to
> the ECU, but not vice-versa.  I haven't found anything in VAG-COM
> that would
> adjust the speedometer or odometer, in fact, it is designed to
> prevent any
> manipulation.
> 
> Looking at three speedometers, they all have the needle at rest just
> below the
> 0 mark as you describe.  I would have to believe the needle was
> subjected to
> impact g-forces that caused it to slip on the shaft.  A sudden impact
> is usually a
> factor in a s-car instrument cluster appearing on the market.
> 
> Perhaps this is desirable since you might be able to turn a speeding
> citation
> into a faulty equipment plea.
> 
> Tom
> 
> 
> 
> -----Original Message-----
> > Date: Thu, 16 Aug 2007 19:19:12 -0600
> > From: Tom Winter <tom at freeskier.com>
> > Subject: [s-cars] Speedo Info Needed: how to calibrate/adjust
> > To: <s-car-list at audifans.com>
> > Message-ID: <C2EA53B0.3225%tom at freeskier.com>
> > Content-Type: text/plain;	charset="US-ASCII"
> >
> > Hi team:
> >
> > Those of you with long memories may remember my instrument cluster
> > woes. I
> > was about to tear the cluster apart and get intimate with things like
> > "electronics" but scored a used one and finally installed it. (the
> > avant was
> > sidelined getting the timing belt replaced, head rebuilt and an RS2
> > exhaust
> > manifold installed).
> >
> > As far as the "new" instrument cluster goes, the tach works, the
> > temp gauge
> > works, and no more flaky autocheck! In fact, it all works!!! And I am
> > stoked.
> >
> > But the speedo registers 10mph lower than it should. Everything
> > that could
> > effect the readings is stock (ie. wheel size, etc.). Is there an
> > easy way to
> > crank up the needle on the MPH dial?
> >
> > To whit: my old speedo needle sits at just below the 0 mph mark
> > when the car
> > is at rest. This "new" one  sits much lower when the vehicle is not
> > moving,
> > pointing directly towards the left hand side of the " _" (flat
> > part) at the
> > bottom of the the MPH dial. My other speedo points much higher up
> > to the
> > left side of the bottom "_" (flat part) of the dial when at rest.
> >
> > I don't want to take apart the instrument cluster (or even remove it,
> > seriously!), because my problems started when replacing the
> > ignition switch.
> > The I-cluster is testy! I suppose I'm dreaming when it comes to a
> > simple
> > fix! LOL!
> >
> > Thought I'd throw it out there, though. . ..   :-)
> >
> > Solutions?
> >
> > Tom
> > '95 S6 Avant (10 mph slower than the rest of ya!)
> 
> >
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