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ABS light and speed-o

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Old May 26, 2010 | 10:08 PM
  #1  
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ABS light and speed-o

Today my abs light came on and my speed-o only works when I am coasting!

I'm leaving on a trip with it tomorrow ! Am I in any danger and any ideas whats causing this? The truck is a 1999 F 250 4x4 7.3 with rear anti locks only.

By the way I have a gps for watching my speed for now.

Help please!!!!

I just took it out for a drive and and the over drive button light blinks at low speeds but not at 65mph. Hope this helps!!
 
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Old May 27, 2010 | 11:04 AM
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Not certain on a '99, but I suspect the VSS sensor in the rear differential. Should be easy to change before you leave. Not changing it could theoretically harm your transmission.
 
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Old May 27, 2010 | 05:35 PM
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Its fixed!!!
It was the unit in the rear end!!!!

Thank you For all the advice!!!!!!!!
 
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Old May 27, 2010 | 05:40 PM
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Good to hear it. Enjoy your trip.
 
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Old Jun 2, 2010 | 09:38 AM
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Thanks again, My trip went great!!!

No more problems with it!!
 
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Old Jun 4, 2010 | 07:44 AM
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I just had this happen to my 99 truck. Its nice when its a cheap and easy fix!
 
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