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Rear ABS / Speed Sensor Failure

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Old 03-05-2015 | 12:21 PM
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06RAMCTD's Avatar
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From: Northern Virginia
Rear ABS / Speed Sensor Failure

The factory sensor failed at roughly 85,000 miles and was replaced with a NAPA branded part. The first NAPA branded part lasted to roughly 108,000 miles. A second NAPA branded part was installed and just failed at 116,000 miles. I've checked connections, wiring, etc at the axle and all appears in good working order. The wiring looks good along the frame rail towards the front where it joins a bigger loom and is impossible to trace further.

Truck runs fine, no power loss, speedo is intermittent, ABS does not work. Same symptoms each time.

Am I missing something that could be causing the sensors to fail?
Or, are the NAPA branded parts cheap and prone to failure?

Thanks!
Old 03-05-2015 | 09:28 PM
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was there any metal particles on sensor when you removed it? Did you check tone ring for any damage? What code is setting?
Old 03-06-2015 | 12:41 PM
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06RAMCTD's Avatar
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No metal on any of the sensors. When I removed them, all were clean and without and marks. When I changed the axle lube at 50k and 110k, everything was fine with the fluid, no metal pieces in the fluid and everything looked normal within the housing. Also, there were no codes being thrown during any of the failures. At least none that displayed with the OBDII tool or via the ignition key turn method.

Originally Posted by BigIron70
was there any metal particles on sensor when you removed it? Did you check tone ring for any damage? What code is setting?
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