[urq] Re: Still ABS problem on Urq

[Jim Haseltine]

You need 4 of #437 927 809. It's a plastic cap usually white which fits on
the end of the sensor.
Fit a cap and then press the sensor in until it is tight against the cv
joint. When the car moves, part of the car will be worn away by the cv teeth
leaving the sensor at the correct distance.

Well, that's the theory anyway. On my car I had to give one of the sensors a
light tap with a pin hammer to seat it correctly.

Regards,

Jim Haseltine

----- Original Message ----- 
From: "Ado Sigal" <a.sigal at bluewin.ch>
To: "Urquattro List" <urq at audifans.com>; "Quattro at Audifans.com"
<Quattro at audifans.com>
Sent: Saturday, December 27, 2003 7:07 AM
Subject: Still ABS problem on Urq


> Thanks Jim, thanks Phil; cleaned and reset the sensors again, just in
case, 'chisel' side perfectly parallel as it was,
> still same problem. Sensor clearance now is 1 mm, previous was 1.5 mm, and
ABS noise that starts after initial
> engagement, stays on now for longer than before, so there is a difference.
BTW, what should be sensor-CV required
> distance, and of course, any more ideas?
>
> Regards,
>
> Ado Sigal
>
>
> Phil Payne wrote:
> >
> > > Somewhere in the work you've done one or more of the sensors has been
> > > disturbed and now the ABS unit isn't seeing the same level of signal
from
> > > each sensor.
> > > Could also be due to dirt/dust/rust etc on the cv joint teeth.
> > >
> > > Sometimes simply resetting the sensors works, other times you have to
clean
> > > the cv joint teeth and reset the sensors. If the teeth are badly
corroded
> > > the it's time for new joints.
> >
> > And the "chisel end" of the sensor must be parallel to the teeth on the
hub - it's easy to
> > twist it round on removal.
> >
> > --
> >   Phil Payne
> >   http://www.isham-research.com
> >   +44 7785 302 803
> >
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