I suspect ASC problem 840ci 1994 - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 08-29-2012, 01:53 PM
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I suspect ASC problem 840ci 1994

I got this car not so long ago and noticed that while driving on the freeway it doesn't feel very stable. Just simple flaws on the road I can feel the car swerve a little. It almost feels like it's going to lose control but thankfully it doesn't. When I accelerate hard on wet road I can feel the tires lose traction, but the ASC light doesn't flash or anything. I don't even know if it's working or not. Can this be my problem as to why it feels so unstable while driving on the freeway? I would assume that the ASC light should stay on if the unit was faulty, but there's no indication whatsoever. However, when I push down on the ASC light the orange light does stay on. Any clues?
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#2 (permalink) Old 10-19-2012, 10:55 AM
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#3 (permalink) Old 10-20-2012, 02:49 AM
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Start by checking your suspension out. Worn out trailing arm bushings can cause the rear end to swerve under acceleration. That is normally the leading symtom of worn bushings. Odds are they have never been replaced and now they have worn enough to cause noticeable issues.

I doubt the ASC has anything to do with this, but check your tires to make sure their not worn. The 4L V8 does make enough power to cause wheelspin in situations with less then normal traction


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#4 (permalink) Old 10-20-2012, 01:00 PM
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Quote:
Originally Posted by Lord Vader View Post
Start by checking your suspension out. Worn out trailing arm bushings can cause the rear end to swerve under acceleration. That is normally the leading symtom of worn bushings. Odds are they have never been replaced and now they have worn enough to cause noticeable issues.

I doubt the ASC has anything to do with this, but check your tires to make sure their not worn. The 4L V8 does make enough power to cause wheelspin in situations with less then normal traction
What's interesting is the fact that the asc light doesn't flash during wheelspin. And if the asc was experiencing problems, the light should remain on. I'm wondering if there's a part that may have been removed to deactivate the system.
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#5 (permalink) Old 10-21-2012, 07:11 AM
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If you believe that, have the car scanned for trouble codes. Just because the light isnt on, doesnt mean their may not be something that has triggered a trouble code.


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