help me diag ABS

[Christopher Pawlowicz <chrisp@xxxxxxxxxxxxxxx>]

raymond wong sez
>car is 86 325e
>My ABS has slowly come to fail.  Symptoms at first
>were abs would cycle when slowly down to near stopping
>speeds. Light would still be off.
>Several weeks past.
>Now light stays on all the time and abs is bypassed.

I've saved a few posts from people in the past re:ABS.. you
can find them at

ftp://ftp.doe.carleton.ca/pub/chrisp/bmw/abs/

they include a wiring diagram, some part numbers and tips
on troubleshooting

when I get around to it maybe I'll squish them into some kind
of FAQ.. sigh

>Question: I thought the early bmw rear abs had only
>one speed sensor, ive noticed on my i have individual
>sensors on each wheel, just wondering.

nope, I'm pretty sure all bmws had 4 sensor minimum 3 channel ABS


chris pawlowicz
'89 325i
'74 2002

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