[s-cars] ABS issue

[mike schowengerdt]

first thing to do is re-seat all wheeel speed sensors , if that doesn't do it , pull them out and look carefully at the speed rings (rotate the axle and look all the way around for cracks or rust filled teeth) most common problem is the front sensors get disturbed when cv joint or suspension work is done.........HTH............m




________________________________
From: "Young, Steve" <sryoung at trane.com>
To: S-Cars <s-car-list at audifans.com>
Sent: Mon, January 11, 2010 11:11:13 PM
Subject: [s-cars] ABS issue


Lister...

Let me start by saying this could conceivably apply to any ABS equipped car.  I bought a B5 A4 Avant, 2.8L, 5sp about 15 months ago.  I bought it with the ABS light on and the flashing brake light.  Typical ABS module failure.  I got around to having it rebuilt last month.  Reinstalled it and no lights...cool.  Or so I thought.  Now I have the ABS activating on 9 out of 10 stops regardless of road condition.  I am not convinced it is the module, and can't help but wonder if this situation is what caused the module to fail in the first place.  Could this be a bad wheel speed sensor fooling the ABS system into thinking it needs to compensate for slippery road conditions at all times?  Anyone dealt with this issue before??  TIA

Regards,

Steven Young, CEM
Project Developer - Connecticut / New York / Vermont Territory
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