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Car Forum / Saab Cars / May 2007

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ABS indicator

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johannes - 22 Apr 2007 10:00 GMT
The ABS indicator light on my 1993 9000 CSE comes on when staring first
time in the morning, it sometimes stays on while driving off. However,
this might not happen from the following starts during the day.
yaofeng - 23 Apr 2007 02:06 GMT
> The ABS indicator light on my 1993 9000 CSE comes on when staring first
> time in the morning, it sometimes stays on while driving off. However,
> this might not happen from the following starts during the day.

This may be more serious but check the sensors first.  Measure the
resistance at the sensor connections for 800 to 1400 ohms.  The front
sensor connectors are located on either side of the fish tank.  The
rear sensor connectors are beneath the rear seat cushion.
johannes - 25 Apr 2007 20:12 GMT
> > The ABS indicator light on my 1993 9000 CSE comes on when staring first
> > time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 4 lines]
> sensor connectors are located on either side of the fish tank.  The
> rear sensor connectors are beneath the rear seat cushion.

Thx, but was is the fish tank?
yaofeng - 26 Apr 2007 12:53 GMT
> > > The ABS indicator light on my 1993 9000 CSE comes on when staring first
> > > time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 6 lines]
>
> Thx, but was is the fish tank?

I take you meant where?  The space behind the engine and in front of
the foot well wall is called the aquarium.  Open hood.  Remove six or
seven screws on the plastic panel in front of the windshield to reveal
the fish tank.
Johannes Andersen - 27 Apr 2007 21:26 GMT
> > > > The ABS indicator light on my 1993 9000 CSE comes on when staring first
> > > > time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 11 lines]
> seven screws on the plastic panel in front of the windshield to reveal
> the fish tank.

Ahh I zeeee
robanzellotti@googlemail.com - 01 May 2007 13:44 GMT
> > The ABS indicator light on my 1993 9000 CSE comes on when staring first
> > time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 4 lines]
> sensor connectors are located on either side of the fish tank.  The
> rear sensor connectors are beneath the rear seat cushion.

Are you sure this is a problem? My '92 900 always did this (about 1
minute for a cold start) in the 5 years I had it, and I just replaced
it with a '91 which does it as well.

Robobass
Fred W - 01 May 2007 14:03 GMT
>>>The ABS indicator light on my 1993 9000 CSE comes on when staring first
>>>time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 10 lines]
>
> Robobass

I had a '92 and a '93 9000 (both w/ ABS of course) and neither of them
ever behaved this way.  The ABS light should come on at starting and go
off within a few seconds.  You should not have to move before the light
goes off.  Diagnosing the problem may be tricky until the unit fully
fails.  So long as the ABS light does go off eventually I guess I would
just continue to monitor it.

Signature

-Fred W

johannes - 01 May 2007 17:11 GMT
[...]

> I had a '92 and a '93 9000 (both w/ ABS of course) and neither of them
> ever behaved this way.  The ABS light should come on at starting and go
[quoted text clipped - 5 lines]
> --
> -Fred W

The ABS light tends to stay on during the first journey of the day, then
goes off at the next journey.
Fred W - 01 May 2007 19:53 GMT
> [...]
>
[quoted text clipped - 10 lines]
> The ABS light tends to stay on during the first journey of the day, then
> goes off at the next journey.

Oh, that's not so good then.  I'd have it diagnosed first thing in the
morning by leaving it at the mechanic's overnight.  Of course you
realize that as soon as it gets to the mechanic's it will stop acting up
until you bring it back home.  ;-)

Signature

-Fred W

johannes - 01 May 2007 20:18 GMT
> > [...]
> >
[quoted text clipped - 15 lines]
> realize that as soon as it gets to the mechanic's it will stop acting up
> until you bring it back home.  ;-)

But that has it's positive side... It recently went through MOT, it happened
just as you said :-)
johannes - 16 May 2007 22:03 GMT
> >>>The ABS indicator light on my 1993 9000 CSE comes on when staring first
> >>>time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 17 lines]
> fails.  So long as the ABS light does go off eventually I guess I would
> just continue to monitor it.

The mechanic plugged in some diagnostic display, it showed that one rear
wheel ABS sensor was bad. Had it replaced today.
robanzellotti@googlemail.com - 22 May 2007 19:10 GMT
> The mechanic plugged in some diagnostic display, it showed that one rear
> wheel ABS sensor was bad. Had it replaced today.

I just wanted to mention that I was able to repair a sensor and save
myself EUR150. It was the cable and not the sensor itself that had
failed. I spliced in a length of coax guitar cable. Worked like a
charm!
Robobass
Richard - 22 May 2007 20:29 GMT
>> The mechanic plugged in some diagnostic display, it showed that one rear
>> wheel ABS sensor was bad. Had it replaced today.
[quoted text clipped - 4 lines]
> charm!
> Robobass

YEah right...
and next time you have a silly little collision with a lot of damage to
someone elses car, the insurance company finds the guitar cord and refuses
to pay?
Hm.... :-(
Not my way of "fixing" a safety-device on my car.

Richard.
johannes - 01 May 2007 16:54 GMT
> > > The ABS indicator light on my 1993 9000 CSE comes on when staring first
> > > time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 10 lines]
>
> Robobass

It's quite likely that the ABS is ineffective during the time when the
light is on. I.e. indicators do mean something.

There was one a story when right tank in an passenger airline showed
empty, the captain thought it was a software error, so they opened a valve
to the left tank to satisfy the software. Unfortunately there was a hole
in the right tank, so they lost all fuel. However, they did manage to
glide the plane to a nearby airport, but only got one chance of landing...
yaofeng - 22 May 2007 19:49 GMT
On May 1, 8:44 am, robanzello...@googlemail.com wrote:

> > > The ABS indicator light on my 1993 9000 CSE comes on when staring first
> > > time in the morning, it sometimes stays on while driving off. However,
[quoted text clipped - 10 lines]
>
> Robobass

If you compare this to the days before ABS was even available, of
course it is not a problem.  In fact in New Jersey the State
inspection does not care if you have ABS or not.  But it could
potentially save your life in out of control spin out while your are
driving.  You brake still works with ABS not functioning.
 
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