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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Replaced NS Front Wheel bearing, Now ABS problems.Views : 533 Replies : 6Users Viewing This Thread : |
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Feb 11th, 2020, 20:35 | #1 |
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Replaced NS Front Wheel bearing, Now ABS problems.
Hi all,
Replaced my near side front wheel bearing on Saturday and now find the ABS keeps kicking in intermittently. The knuckle and bottom of the shock was quite badly corroded but cleaned them up as best as, plus gave the sensor a small spray with WD-40 and wipe. ABS ring had some surface corrosion but nothing to serious as it’s only 2 years old. Thing that’s puzzling me is when it kicks in I get no warning lights, like you do when the traction control kicks in and have no ABS light on dash so no code. Is this Normal? Many thanks Regards Tom |
Feb 11th, 2020, 20:44 | #2 |
amazondean
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It's not normal and you do have a problem. Maybe you disturbed the wiring when you unplugged it at the hub. If the ring is not too corroded that shouldn't be a problem. My bet is either where the wiring plugs in at the hub or it's the sensor itself and can be a bit of a pain to remove if it has corrosion holding it in place!
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Feb 11th, 2020, 20:51 | #3 |
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If you don't get the driveshaft fully seated, or the axle nut fully torqued, the tone ring won't be in quite the right place. This will cause intermittent abs light illumination. Read the ABS codes, will help narrow it down.
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Feb 11th, 2020, 20:59 | #4 |
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Thanks for the quick reply’s. Sorry poor wording, I know the problem itself is not normal but I don’t have an ABS warning light therefore I’m puzzled. If I got some locktite or grease on the ring could this cause the issue without throwing a code?
Thanks I’ll maybe recheck the drive shaft bolt is torqued correctly! |
Feb 11th, 2020, 21:23 | #5 | |
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Feb 13th, 2020, 10:28 | #6 |
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My suggestion would be to remove the sensor and give it a good clean with brake cleaner, then soak a small firm bristle brush with the cleaner and push it down the sensor hole so it contacts the ring and spin the wheel. This will give it a good clean. This worked on my 850, not sure what your model is.
However, if the ABS is kicking in intermittently with no warning light showing, fault code reading is the way to go. Dave
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Feb 13th, 2020, 11:17 | #7 | |
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Quote:
This condition can be generated by a poor, broken or intermittent signal from the ABS sensor, as would happen if the wheel really was skidding. This can be caused by the reluctor ring (favourite) being out of position, cracked or corroded, or by the ABS sensor itself - sometimes rust has got under the mounting bracket and pushed it too far from the reluctor ring, thus producing a poor signal, or of course the sensor itself could be faulty but IMHO this is the least likely cause.
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