A strange ABS issue

jonbill · April 27, 2017, 07:39

No progress I'm afraid. I'm away this weekend anyway, so will research it next week.

jonbill · May 6, 2017, 17:06

New reluctor fitted and I reckon it's fixed. No sign of a problem on a run round the block.

lamcote · May 6, 2017, 17:48

Excellent news, thanks for the update, that's a useful thing to know about.

Was it easy to remove the hub?

jonbill · May 6, 2017, 20:58

Quote from: "lamcote"Excellent news, thanks for the update, that's a useful thing to know about.

Was it easy to remove the hub?

yes, pretty straightforward TBH the hardest bit was reassembling the handbrake link - both caliper & Cable aren't in great shape.

JoeCool · May 6, 2017, 21:21

Very interesting.

I have occasional problems with this. Much more noticeable on loose surfaces/dirty roads. On track you're kissing the windscreen before the ABS kicks in. I guess I'll have to check these out.

StuC · May 6, 2017, 21:29

Quote from: "jonbill"
Quote from: "lamcote"Excellent news, thanks for the update, that's a useful thing to know about.

Was it easy to remove the hub?

yes, pretty straightforward TBH the hardest bit was reassembling the handbrake link - both caliper & Cable aren't in great shape.

How does the ring fit onto the shaft?

Call the midlife! · May 6, 2017, 21:33

Quote from: "StuC"
Quote from: "jonbill"
Quote from: "lamcote"Excellent news, thanks for the update, that's a useful thing to know about.

Was it easy to remove the hub?

yes, pretty straightforward TBH the hardest bit was reassembling the handbrake link - both caliper & Cable aren't in great shape.
How does the ring fit onto the shaft?

Must... not... comment... move away, nothing to see here!

Sent from my iPhone using Tapatalk

StuC · May 7, 2017, 04:07

In this instance it was a genuine question. [emoji38]
Just a really poor choice of words on my part!

jonbill · May 7, 2017, 08:36

Quote from: "StuC"How does the ring fit onto the shaft?

[emoji52] it's a slight interference fit, so gently drifted on with a plastic mallet.

StuC · May 7, 2017, 09:29

That's as I thought. So the part is installed with some inherent tension. I was just wondering why your part had failed, thats all.
Thanks.

jonbill · May 7, 2017, 10:02

Quote from: "StuC"That's as I thought. So the part is installed with some inherent tension. I was just wondering why your part had failed, thats all.
Thanks.

Yes. I think the root cause is a little corrosion under the ring. Rust increases the tension and it fails.

I spent a few mins rubbing the shaft down before I put the ring over it.

Fnar.

phaeton · May 10, 2017, 18:27

I was told that it can also be caused by frost, small amount of damp gets in then freezes & causes expansion, whether that is true or not no idea.

jonbill · May 11, 2017, 14:35

That sounds very possible too.

tricky1138 · May 22, 2017, 21:09

I'm just adding to this with my similar problems.

I started off with very similar symptoms of the wheels skidding and the ABS kicking in when slowing to almost stop.
I too had put it down to a broken wheel bearing causing the ABS ring to get confused.

I replaced both rear wheel bearings but broke one of the ABS sensors (or it could have been the problem) all along!

Wheel bearings arrived before sensor so put them in first. Car was great with no rumbling but obviously ABS light was on and disabled. Drove the same roads I usually do and never locked up once in the placed I previously would.

ABS sensor now replaced but light still on. Exactly the same as before.

Couple of days later ABS light went off on it's own accord. Now whenever I come to a complete stop the ABS kicks in, brake peddle vibrates and makes that horrible ABS noise, but the car does not skid!

Anyone any ideas what's up now?! s:(

s:(

jonbill · May 22, 2017, 22:11

Well- there's a great bit of software called techstream that Toyota dealers and perhaps some others have. It will show the operator what the wheel sensors are reporting and what the ecu has decided to do with the solenoids.
Such a session helped me diagnose mine [emoji16]

tricky1138 · May 22, 2017, 22:15

Quote from: "jonbill"Well- there's a great bit of software called techstream that Toyota dealers and perhaps some others have. It will show the operator what the wheel sensors are reporting and what the ecu has decided to do with the solenoids.
Such a session helped me diagnose mine [emoji16]

Cheers. I thought that would be the answer. Getting plugged into Techstream on Ding Day so hopefully get the answer then. Just wondering if anyone else had any thoughts!