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Old 05-11-2007, 03:55 AM   #1
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When I last pulled my coach out to wash it, a warning buzzer sounded and the ABS light came on. The light went out on the freeway after a couple of miles. Has this happen to anyone else? Should I be concerned? 07' 8.1 and Allison 6speed.
Thanks,
Tim
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Old 05-11-2007, 03:55 AM   #2
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When I last pulled my coach out to wash it, a warning buzzer sounded and the ABS light came on. The light went out on the freeway after a couple of miles. Has this happen to anyone else? Should I be concerned? 07' 8.1 and Allison 6speed.
Thanks,
Tim
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Old 05-11-2007, 04:12 AM   #3
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Yes, and No... If the light goes out no problem! If the light stays on you still have brakes to stop with. It's like the dealer tells you "IT"S THE NATURE OF THE BEAST"! Remember just like Government contracts builders use the equipment supplied by the lowest bidder to make mo'money even WHorse/Bago and like the Gov they'll tell you It's the best! LOL

I have the same issue with ours. It happens more then it should! Never came on in any car I had, Never... ABS brakes back to 1988.
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Old 05-11-2007, 06:50 AM   #4
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Ok, ABS primer. The ABS system consists of 3 main parts or part classes

The first are the sensors, these are normally what are called Hall Effect sensors (I got extra credit in my college physics class for investigating and demonstrating the hall effect so I know a bit about it) this is the tendency of electricty to flow in a curve if subjected to a magnetic field. There is next to no way that these sensors can fail save a broken wire, however fail they do, from time to time, for assorted reasons. SOME of these reasons are self-repairing, IE, debris with high magnetic content on the hub can cause a failure, and when it falls off... the failure clears.

Then we have the computer, Since we all use computers, I won't bother with all the ways a computer can fail.

Finally we have some mechinically active device, this is designed to cause the brakes to release and reapply rapiddly when a tire starts skidding.

Since these are mechincal devices they too can fail.

There is also some kind of sensor at least on some systems that informs the computer that you are or are not moving, I mean a wheel not turning when you are not moving.. NORMAL. so no action needed, but a wheel turning when you are moving NOT normal

When you first start the rig, the ABS goes into test mode, this takes around 20 seconds, then the light goes out and you are good to drive

After that you should never see the light
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