Re: ABS'ness

["Fred Munro" <munrof@isys.ca>]

It is not uncommon for this to happen occasionally - my '86 5ktq and my '91
200q used to activate the ABS now and then just as the car rolled to a stop.
If it happens all the time, it means that the ABS sensor is losing the
signal from the CV joint rotor at low speeds. Probably a misaligned sensor
given that your CV boots were just done.
    Your '89 may have the new style ABS sensor. The earlier '86-'88 cars had
bolt in sensors which were spaced with sacrificial plastic caps. I think the
sensors on the later cars just push into place until seated.

HTH

Fred Munro
'94 S4  91k km

----- Original Message -----
From: Thompson Smith <thompers@together.net>
To: <quattro@audifans.com>
Sent: Monday, November 15, 1999 9:44 AM
Subject: ABS'ness


> Car:
> 1989 200tq Avant, Lago Blue Met
> 187K miles
> Grey leather heated Sport seats
> Eibach ProKit springs
> SPAX adj suspension
> OE BBS rims w/eco studded Hakki 1's (winter)
> MSW 7x15 ET 35 front 205/55-15 SP Sport W10s (summer)
> MSW 7x15 ET 40 rear 205/55-15 SP Sport W10s (summer)
> '82 5000 spoiler'ettes
> 1.6bar WG spring
> K&N air filter
> Hella 500's
> H4/H3 Euro lights - on the way from Metrix!
> S6 badges & rear style twin tail pipe
> Audi Sport shift knob
>
>
> Symptom:
> ABS activates _right_ before you come to a complete stop ~2mph or so.
> Switch it off on the dash and it is turned off. So this switch works as
> does the ABS. It only happens right before a complete stop at very slow
> speeds. If the ABS is on at anything above 8mph systems works fine.
>
> Both my front outer CV joints were rebooted lately and I wonder if the
> ABS sensors were bumped or missalinged? Could some of the Bentley manual
> abusers out there look up what the "air gap" distance is for setting the
> ABS sensors in the struts? Any other item to check, bad sensor? It
> drives my wife nuts. TIA.
> --
> Regards,
>
> Thompson Smith   http://www.thompsonsmith.com/944.jpg
> 1987 Porsche 944 /1989 Audi quattro avant "S6"  GMR/PCA
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>