'88 90q ABS Weirdness
Rennkafer at aol.com
Rennkafer at aol.com
Thu Nov 8 19:25:36 PST 2007
========Original Message======== Subj: quattro Digest, Vol 49, Issue 11
Date: 11/08/2007 11:59:46 AM Pacific Standard Time From:
_quattro-request at audifans.com_ (mailto:quattro-request at audifans.com) To: _quattro at audifans.com_
(mailto:quattro at audifans.com) Sent on:
I just went through this on my own '88 90Q when I redid all the suspension.
I had pretty much the exact symptoms you descibe though my ABS light would
come on in a block or two and if I reset using the ABS switch, would come back
on again after the same couple blocks. It finally went away when I first
cleaned the sensor tips, then used the new sacrificial caps. I did push them
in fairly tightly (and held them tight) when cinching up the bolts that hold
them. My understanding is they're pretty finicky. Been a couple weeks now
with no issues at all.
Maybe clean them and push them in a little more/harder? Look and see if
there's gunk/grease/road goo on the sensor wheel and clean it too?
Bill J
Message: 4
Date: Thu, 8 Nov 2007 09:18:35 -0800 (PST)
From: Bob Gregory <rggpa1 at yahoo.com>
Subject: '88 90q ABS Weirdness
To: Quattro list <quattro at audifans.com>
Message-ID: <551791.12383.qm at web43140.mail.sp1.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Rear sensors moved during strut change, reinstalled using OEM sacrificial
nylon caps. At "OEM"-depth, ABS light comes on after driving for a while, or
never comes on at all. If it comes on, I can turn it off by depressing the
dash switch twice. At slow stops on dry pavement, ABS clearly pumping away and
lightly pulsing pedal. Many others have suggested that sensors are just out
of adjustment. I have been moving them in and out with no positive success,
altho I can make it worse (i.e., light on all the time).
Are the sensors damaged, relay funky, ABS computer funky, etc...? I handled
the sensors gently when dealing with the struts, and cleaned them before
putting them back. The ABS worked fine before.
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Message: 5
Date: Thu, 8 Nov 2007 10:46:15 -0700
From: "Ed Kellock" <ekellock at gmail.com>
Subject: Re: '88 90q ABS Weirdness
To: "Bob Gregory" <rggpa1 at yahoo.com>
Cc: Quattro list <quattro at audifans.com>
Message-ID:
<ce8c96690711080946i79e00672pade44a42ccc96fb4 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
What about a purely coincidental and unrelated issue with the front sensors?
Ed
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