[V8] Failing Speedo - Sensor p/n?

[dsaad at icehouse.net]

Well - that is something I have not seen in mine. (yet?)
Your description says that the two pieces are not securly bolted together - and
road vibration is taking out the solder joints.
Now I wonder if it came from the factory that way - or someone did not put it
back together after some other maintenance - like replacing light bulbs or
something?

In any case, my money is still on the sender for this particular problem.

Dave


Quoting Tim Hollister <grey_wolf_x at yahoo.com>:

> Incorrect:
>
> there are pins that interconnect the different boards to each other. those
> pins tend to crack
> loose from the board. speedo, fuel guage, and oil pressure problems are all
> symptoms. I have
> repaired BOTH of my v8's due to this problem. Ingo has a write up on it
> somewhere, or I could do
> another one.
>
>
> --- dsaad at icehouse.net wrote:
>
> > I wouldn't be so quick to dismiss the sender.
> > The amount of "shock" you can administer by whacking the dash is pretty
> minimal,
> > and the connections are just not that fragile.
> > It is more likely that it just springs back to life near the same moment
> you
> > smack it.
> > It is also pretty hard to believe that the speedo wire always goes bad
> somewhere
> > but the hundreds of other wire connections do not - many people have had
> the
> > exact same failure/symptom and for me at least a new sender fixed it.
> > The V8 cluster is not at all like the 100/200 clusters and do not suffer
> from
> > the cracked flexible trace problem they had.
> >
> > Soldered connections do not normally fail - all cars have thousands of
> them. The
> > only weakness I found in the V8 dash was the solid wire ribbon cables that
> > connect the various pieces together. You could in fact have an
> intermittent
> > there, but resoldering the connections is un-likely to fix it because the
> crack
> > happens inside the molded plastic part where the "pin" attaches to the
> solid
> > wire. The only fix here is to replace the ribbon or rewire with individual
> > strands. (that is what I did)
> >
> > Anyway - if you want to be sure, put a meter on the sender wire and drive
> > around. You will see exactly where the problem is this way. If you want to
> prove
> > it is/is not the sender, measure at the first connection point you can
> down
> > stream from the sender. I think this is at one of the Kostal connectors.
> > If the signal drops out down there, there is no reason to tear into the
> dash.
> >
> >
> > Dave
> >
> >
> >
> > Quoting Jeremy Ward <jward.v8 at gmail.com>:
> >
> > > And if you whack it (open palm on the top of the dash)?  Mine usually
> > > springs back to life; definitely not a speed sensor.
> > >
> > > I've had the IC out 3 times to clean and 'enhance' the contacts where the
> 5
> > > (?) pins come out of the circuit board and meet the sockets of the
> > > speedometer, but I need to do 'the fix' that Ingo prescribes where you
> > > de-solder / re-solder the pins where they meet the circuit board...
> > >
> > > You know, before I had 3 kids, I had gobs of free time...
> > >
> > > - Jeremy
> > >
> > > -----Original Message-----
> > > From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
> Of
> > > Scott Baumann - PTS Power
> > > Sent: Wednesday, January 03, 2007 9:13 AM
> > > To: 'Coleman, David'; Steven.Buchholz at kla-tencor.com; v8 at audifans.com
> > > Subject: Re: [V8] Failing Speedo - Sensor p/n?
> > >
> > > YES - my odometer also quits working, as well as the cruise control and
> the
> > > computer goes nuts.  Does this tend to point more towards the IC, or
> more
> > > the sending unit?
> > >
> > > -----Original Message-----
> > > From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
> Of
> > > Coleman, David
> > > Sent: Tuesday, January 02, 2007 9:13 PM
> > > To: Steven.Buchholz at kla-tencor.com; v8 at audifans.com
> > > Subject: Re: [V8] Failing Speedo - Sensor p/n?
> > >
> > > Does your odo quit at the same time?
> > >
> > >
> > > --------------------------
> > > David A. Coleman
> > > BlackRock
> > > Sent via BlackBerry Wireless
> > >
> > >
> > > -----Original Message-----
> > > From: v8-bounces at audifans.com
> > > To: v8 at audifans.com
> > > Sent: Tue Jan 02 17:15:37 2007
> > > Subject: Re: [V8] Failing Speedo - Sensor p/n?
> > >
> > > .... I'm seeing some odd speedo behavior on #344 too ... very weird ...
> it
> > > works fine most of the time, but all of a sudden the speedo drops to -0-
> for
> > > some period of time and stays there.  It seemed to be most consistent if
> I
> > > took the car for a short errand run ... when leaving the place I'd have
> no
> > > speedo ... but I see it mid trip on longer runs too ... after a minute
> or
> > > two the speedo comes back.
> > >
> > > I had convinced myself it was the speed sender in the tranny because the
> > > trip computer was showing zero speed as well ... but upon further head
> > > scratching I realized that the speedo is likely to be sending the signal
> to
> > > the trip computer ...
> > >
> > > I'd say that before plunking down the bucks for a new sender that you do
> > > some tests to eliminate the instrument cluster as culprit.
> > >
> > > A very long time ago there was a V8 lister who claimed to have
> schematics
> > > for the V8 IC ... boy, I would really have loved to get copies of them!
> > >
> > > Steve B
> > > San José, CA (USA)
> > > >
> > > > I have a failing speedo (dropping to 0, then springing back up).  I
> > > suspect
> > > > it's the speed sensor.  Does anyone have a recommendation (other than
> the
> > > > dealer) for a new sensor?  Any known partnumbers?  Thanks!
> > >
>