New sensor - old error remains :-(

[Scottish Storm]

Swapped out my front right speed sensor as it was throwing an error light up on the dash but I still have the same light and the same error code showing.

I've heard this can mean it's the bearing on its way out. I assume the sensor reads off the hub shaft if this is the case.

Can anyone confirm this for me please as it looks like it might be the next job.

 

[Badger]

Is the sensor a genuine OEM part?

 

[Scottish Storm]

No, as in not bought from Seat or VW, but it is meant to be OEM quality.

 

[Badger]

Some 'OEM quality' electrical sensors are usually pretty sh*t. Even some from the big automotive suppliers are known to fail or not work at all.

In regards to the wheel bearing question, is there any play with the wheel at all? Both front to rear and side to side?

 

[Scottish Storm]

That's my check for tomorrow badge, check for any movement. It sounds okay but I've not good a good history of recognising bad bearings!

 

[Badger]

Not to teach you to suck eggs, but I'm sure you'll be able to tell if the bearing is shot or needs tightening. No freeplay should be felt and spinning of the wheel should be smooth and noise free. Grab the strut spring and feel for any vibration when spinning too

 

[Scottish Storm]

Never heard that about the spring before badger, thanks.

see, every day is a school day! Lol

 

[Badger]

It's useful when tracking down which side a humming is coming from. You do ideally need to try both side for comparison, however, you can feel if the wheel bearing is running rough during spinning.

 

[James_R]

Can we have the error code please?

 

[Scottish Storm]

It comes up on the scanner as 00285 "ABS Wheel Speed Signal #2 (Right Front) - Range/Performance -G45"

 

[James_R]

Did you check the loom wasn't damaged?
I.e rubbed through on the wheel or something?

 

[Scottish Storm]

Did you check the loom wasn't damaged?
I.e rubbed through on the wheel or something?

Yeah, the loom is all intact, no signs of any chafing and its all hooked up as it should be so isn't flapping about any.

I got about a mile before the code flashed back up but I don't know if that's relevant or not.

 

[Scottish Storm]

After thinking about it, I've changed the springs and shocks so I've disturbed things in that area. I'll check the loom for continuity in the morning, if I can work out where it goes that is! Lol

 

[Scottish Storm]

Okay, now in really lost. There is no movement in the bearing at all and it doesn't feel or sound rough at all. The wiring is all good, and the initial check the car does recognises all sensors as being there. New sensor has not got an open circuit either.

I drove a few miles then the ABS light came back on, same issue.

Now, when I stop and turn the car off then turn it back on the ABS light comes up on the dash but, when I reverse a wee bit it goes out? What's all that about.

So, good problem solving skills needed here please as in getting no where fast, literally! Lol

 

[Badger]

Wow, sounds like a pickle!

I'm just wondering whether the sensor is of good enough quality (i.e OEM) may read when stationary however, when moving throws the sensor readings way out. Shame you don't have another Ibiza to test a known working sensor on your car to eliminate a wiring issue.

 

[Scottish Storm]

Okay, here's the plan for the moment. Gonna get another hub and replace the one that's on to see if that works. That should give me a known and working ABS sensor and bearing to see if that fixes the problem.

If not, then we know it's electrical and I can start pulling the wiring to bits. (And I'll have a spare hub for when that one does go!)

 

[JR_130]

I had a similar issue working on Sister-in-law's 2001 Clio, except i had put in a new driveshaft.turned out the new driveshaft had a different abs ring (more teeth)
i was able to replace it with the abs ring from the old driveshaft, and the error light went out.
I also read that a damaged or broken abs ring will cause the same issue.

you could check the abs ring (i'm making an assumption that is what the speed sensor reads)

 

[Scottish Storm]

I had a similar issue working on Sister-in-law's 2001 Clio, except i had put in a new driveshaft.turned out the new driveshaft had a different abs ring (more teeth)
i was able to replace it with the abs ring from the old driveshaft, and the error light went out.
I also read that a damaged or broken abs ring will cause the same issue.

you could check the abs ring (i'm making an assumption that is what the speed sensor reads)

The speed sensor apparently reads a magnetic strip on the bearing JR, so it will be the bearing I need to replace.

Unfortunately the bearing is a second generation one, which has the hub built into it and requires specialist tools to fit properly.

 

[Phil_JJ]

Do you have vcds / vagcom at all?

Check the wheel speeds that are shown are the same?

Does it give a context for the fault? Mechanical / electrical?

 

[Scottish Storm]

Do you have vcds / vagcom at all?

Check the wheel speeds that are shown are the same?

Does it give a context for the fault? Mechanical / electrical?

It just days the signal Phil, stucco makes me think it's electrical. However the bearing sounds rougher when I put pressure on it when turning left that is, so I'll replace the pair of them anyway and see what happens after that