[V8] Failing Speedo - Sensor p/n?

Fri Jan 5 13:30:15 EST 2007

Tim is correct:

Here's my writeup from Sept 2004:

http://www.audifans.com/pipermail/v8/2004-September/003714.html

I would have added it to the knowledgebase, but it's not working.... : (

I'm thinking of posting it to my own website.  But no time yet.

HTH

Ingo

On Jan 5, 2007, at 12:53 PM, Tim Hollister wrote:

> 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!
>>>
>>> _______________________________________________
>>> Audifans V8 mailing list
>>> Send posts to: mailto:V8 at audifans.com
>>> Manage your list connection: http://www.audifans.com/mailman/ 
>>> listinfo/v8
>>> Have an Audi V8 question?  Check the Audifans Knowledgebase!
>>> http://www.audifans.com/twiki/bin/view/Audi/V8
>>> Have a V8 answer? ... Please help others by adding to the KB ... all
>>> contributions welcome!
>>>
>>> THE INFORMATION CONTAINED IN THIS MESSAGE AND ANY ATTACHMENT MAY BE
>>> PRIVILEGED, CONFIDENTIAL, PROPRIETARY OR OTHERWISE PROTECTED FROM
>>> DISCLOSURE. If the reader of this message is not the intended  
>>> recipient, you
>>> are hereby notified that any dissemination, distribution, copying  
>>> or use of
>>> this message and any attachment is strictly prohibited. If you  
>>> have received
>>> this message in error, please notify us immediately by replying  
>>> to the
>>> message and permanently delete it from your computer and destroy any
>>> printout thereof.
>>> _______________________________________________
>>> Audifans V8 mailing list
>>> Send posts to: mailto:V8 at audifans.com
>>> Manage your list connection: http://www.audifans.com/mailman/ 
>>> listinfo/v8
>>> Have an Audi V8 question?  Check the Audifans Knowledgebase!
>>> http://www.audifans.com/twiki/bin/view/Audi/V8
>>> Have a V8 answer? ... Please help others by adding to the KB ... all
>>> contributions welcome!
>>>
>>>
>>> _______________________________________________
>>> Audifans V8 mailing list
>>> Send posts to: mailto:V8 at audifans.com
>>> Manage your list connection: http://www.audifans.com/mailman/ 
>>> listinfo/v8
>>> Have an Audi V8 question?  Check the Audifans Knowledgebase!
>>> http://www.audifans.com/twiki/bin/view/Audi/V8
>>> Have a V8 answer? ... Please help others by adding to the KB ... all
>>> contributions welcome!
>>>
>>> _______________________________________________
>>> Audifans V8 mailing list
>>> Send posts to: mailto:V8 at audifans.com
>>> Manage your list connection: http://www.audifans.com/mailman/ 
>>> listinfo/v8
>>> Have an Audi V8 question?  Check the Audifans Knowledgebase!
>>> http://www.audifans.com/twiki/bin/view/Audi/V8
>>> Have a V8 answer? ... Please help others by adding to the KB ... all
>>> contributions welcome!
>>>
>>
>>
>>
>> _______________________________________________
>> Audifans V8 mailing list
>> Send posts to: mailto:V8 at audifans.com
>> Manage your list connection: http://www.audifans.com/mailman/ 
>> listinfo/v8
>> Have an Audi V8 question?  Check the Audifans Knowledgebase!
>> http://www.audifans.com/twiki/bin/view/Audi/V8
>> Have a V8 answer? ... Please help others by adding to the KB ...  
>> all contributions welcome!
>>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> _______________________________________________
> Audifans V8 mailing list
> Send posts to: mailto:V8 at audifans.com
> Manage your list connection: http://www.audifans.com/mailman/ 
> listinfo/v8
> Have an Audi V8 question?  Check the Audifans Knowledgebase!
> http://www.audifans.com/twiki/bin/view/Audi/V8
> Have a V8 answer? ... Please help others by adding to the KB ...  
> all contributions welcome!