Rear axle assembly on a bench with ABS Sensor labeled and a rust…

The '87-up ABS sensor (DY1123, F85Z-9E731-AB) bolt is like the rear cover bolts: 13mm hex head @ 25-30 lb-ft. The sensor's resistance should be 800-1400 Ohms across the pins, and more than 10K Ohms from the metal shell to either pin. If any VSS problem is suspected, pull the ABS out & look for damage, indicating a serious problem in the diff. For info about how the ABS sensor is used, read these captions & the others in the albums:

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Early axles use a yoke with U-bolts that wrap around the rear U-joint caps. Later axles use this companion flange (221369) sized for 51330X U-joint with 12-point 12mm bolt heads torqued to 80 lb-ft.

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Owner caption July 2003 · Photo 479 of 6546