[s-cars] Re ABS issue

[Tom Green]

Steve,

Before you get your hands dirty putting this thing on the rack and  
checking all those wheel sensors, why not read the codes?  If you have  
a malfunctioning wheel
sensor it should be storing a code for that wheel sensor.

If it is just out of adjustment or full of crud in the spokes, it will  
probably only activate just before you reach a complete stop;  i.e. ,  
only 3 or 4 quick pulses.

Tom

> -----Original Message-----
> Date: Tue, 12 Jan 2010 05:31:35 -0800 (PST)
> From: mike schowengerdt <urdrquattro at yahoo.com>
> Subject: Re: [s-cars] ABS issue
> To: "Young, Steve" <sryoung at trane.com>, S-Cars
> 	<s-car-list at audifans.com>
> Message-ID: <962626.15758.qm at web83003.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> 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>
>
> 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
>