[V8] Failing Speedo - Sensor p/n?

[Buchholz, Steven]

... mine too ... 

The thing is that I don't think there's a good way to test a flaky sender other than replacement, and I know they are quite expensive.  For my money I'll go through the effort of pulling the IC and applying a good coat of DeoxIt to the pins ... and I'm also going to look for the bad solder joints as Ingo found on his.  Then I can put it all back together and see if the speedo fails again ... and at that point I'll pony up for a new sender ... 

If you have more than one car available I suppose you could swap senders between two cars to see if the problem moves.  You might also be able to identify a problem with the one as you remove it.  I don't know how tough it is to R&R the sender though ... 

Steve B
San José, CA (USA)
> 
> 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-----
> 
> Does your odo quit at the same time?
> 
> -----Original Message-----
> 
> .... 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!
>