[s-cars] S6 Tach and Speedo gone Whacko- Zeroing out and spinning forward

brian bilotti vinnieb2 at yahoo.com
Wed Dec 13 23:41:32 EST 2006


Bob,

I just had the full 034 system installed by 034, read
no more MOTRONIC ECU. I also had the 034 Motorsport
Engine mounts installed.
Can you say, "NO GIVE WHATSOVER"? I also have a
Urethane snub mount. I suspect it's not that :-(

The ONLY thing that cuts out is the speedo and tach.
Heck today I even got the speedo to go 360 degrees
FORWARD, so that makes 180 MPH??? The motor's not
cutting out, ONLY the tach and speedo have gone
whacko.

bb
--- Robert Rossato <bob.rossato_af at cox.net> wrote:

> Brian, 
> 
> I don't have a definitive solution, just some random
> rambling early
> morning thoughts.
> 
> I don't recall this issue before, but one
> possibility may be that you
> have a bad connection or a break in a wire that is
> opening when the
> engine rocks in its mounts during acceleration.  I
> was having a similar
> issue with my oil temperature wiring.  If I
> accelerated hard the gauge
> would drop to zero and then come back up when I
> eased up on the throttle
> and the engine leveled off in its mounts.
> 
> I don't think it's the speed sensor connection at
> the left side of the
> transmission as that would only cut out the
> speedometer, not the tach.
> And since the tach gets its signal from the ECU, I'm
> not sure what wire
> in the engine bay could be intermittent that would
> cause the tach to cut
> out, but not kill the engine.
> 
> Bob
> 
> 
> 
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com 
> > [mailto:s-car-list-bounces at audifans.com] On Behalf
> Of brian bilotti
> > Sent: Wednesday, December 13, 2006 12:44 AM
> > To: s-car-list at audifans.com
> > Subject: [s-cars] S6 Instrument Cluster Zeroing
> out
> > 
> > 
> > S-Heads,
> > Got a weird issue with my IC. On boost, thank you
> > Javad and 034, the tach and speedo needles zero
> > out/drop to zero then shoot back up again.
> > 
> > Wasn't there a writeup about this somewhere?
> > 
> > Thanks
> > 
> > bb
> 
> 



 
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