[V8] Tempermental ABS sensors

[Kneale Brownson]

The sensors just push in to a stop against a shoulder in the housing.   If
you just pulled them out a little and then pushed them back in, it's
possible some corrosion interfered with a proper placement.  

Did you clean out the rust from the teeth the sensors read?

Did you remove the axles to do the boots?  The passenger side axle is
different length.  I don't know if it's possible to install them
incorrectly if they get mixed up, however.  

At 08:54 PM 11/24/2004 -0800, Gunter Lorberg wrote:
>Question:  What do I need to know to ensure that the ABS sensors are 
>positioned properly?
> 
>I replaced both front outer CV boots a couple of months ago.  I gently pryed 
>the sensors out a little to ensure clearance for removing the axles.  I 
>believe that I have pushed them back in as far as they will go (not 
>forcefully, mind you).  Since doing the boots, the ABS has activated 
>unnecessarily at very low speeds in the final stages of deceleration on 
>regular surfaces (just as I'm rolling to a stop....perhaps at speeds less 
>than 5-10mph).  I cannot tell if it involves one side or the other (or both 
>for that matter).  When accelerating AND turning (such as when pulling out 
>of my driveway--again, at VERY low speeds) the quattro drivetrain now seems 
>to 'bind' a bit--it feels as though one of the rear wheels is 'locked' 
>slightly and unable to routinely compensate for different turning radiuses.  
>My theory is that the ABS sensors are feeding incorrect info to the 
>transmission ECU causing a solenoid valve to lock the multi-disc clutch in 
>the planetary center differential.  
> 
>Everything worked well prior to moving the ABS sensors.  The fluids in the 
>front and rear differentials, as well as the transmission, are all clean and 
>properly topped up.
> 
>What should I do with the sensors?  Remove them?  Clean them?  I hope that 
>there is a simply solution.
> 
>I would also like to announce that I have added a 2nd V8 to the garage at 
>home.  Another 1990...black with an automatic.  Both are Canadian cars.
> 
>Thanks for your help,
>Gunter
> 
> 
>
>_______________________________________________
>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.audi-quattro.org/cgi-bin/twiki/view/Audi/V8
>Have a V8 answer? ... Please help others by adding to the KB ... all 
>contributions welcome!