Fw: unruly 164 ABS

["Daegrigg (Don)" <daegrigg@domain.elided>]

----- Original Message -----
From: "Daegrigg (Don)" <daegrigg@domain.elided>
To: "Ryan Kundrat" <ryankundrat@domain.elided>
Sent: Wednesday, February 05, 2003 4:02 PM
Subject: Re: unruly 164 ABS


> Ryan:
>
> The ABS system consists of the ECU, hydraulic unit, wheel sensors, and the
> relay and warning light.  According to the manual, it is adjusted to
engage
> at speed above 3.1 mph (5 km/H).  So it would seem your system is engaging
> at speed outside it normal envelope (but you knew that).  There is no
> trouble shooting section on the ABS, per se, but here are a few diagnostic
> thougts.
>
> If the system is not working correctly, your warning lamp should light up
or
> at least blink but you did not indicate such in your post.  If the ECU
were
> getting error data from the sensors, the light should be on.  Have you
> checked the light with the "test" button?
>
> If you have had bad weather, it is possible that some road grime has
soiled
> a wheel sensor or two.  It's unlikely that this would occur on all four
> wheels.  If the ABS seems to be acting on one or two wheels, this might
> indicate a dirty sensor.
>
> It is also possible that you may just have a bad sensor.  Same suggestions
> as before to isolate the offending unit.
>
> Does your brake pedal feel OK otherwise?  Air in the system could cause a
> mushy pedal but shouldn't affect the ABS.
>
> Also, try searching the Digest archives.
>
> Don
>
> ----- Original Message -----
> From: "Ryan Kundrat" <ryankundrat@domain.elided>
> To: <alfa-digest@domain.elided>
> Sent: Wednesday, February 05, 2003 11:21 AM
> Subject: unruly 164 ABS
>
>
> > For a while now, the ABS on my 164S seems to engage while nearing a stop
> > (the last 5mph) and only seems to happen under med to light pressure, or
> > when letting up on the pedal.  It has recently become more noticable as
> I've
> > had to jam the pedal to the floor to avoid rearending someone in
> stop-and-go
> > traffic.  Also when this occurs, if I completely let up and then reapply
> the
> > brakes it seems to stop it from hapening on that stop.  We've had some
bad
> > weather and I'm wondering if it could be related to a wheel sensor
seeing
> > that it's only recently gotten more noticable.  Any ideas???  Thank you.
> >
> > -Ryan
> >
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