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ABS Light Indicator goes on and off while driving. 89 760T 700

posted by  someone claiming to be David M on  Wed Mar 20 03:20 CST 2002 [RELATED]

I had the same problem with a 744T. With the live rear axle the speedometer sensor in the differential is used for the ABS as well. The wires near the sensor get work-hardened over time as the axle moves up and down and one or both wires break causing the ABS light to go on/off. I noticed that the speedometer needle will jump around and if it gets real bad the cruise control will fail as well. Simply use butt-splices and repair the wires! I got this info free from a dealer. Hope this helps.






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