|
XC90 '02–'15 General Forum for the P2-platform XC90 model |
Information |
|
Is this an ABS fault?Views : 432 Replies : 7Users Viewing This Thread : |
|
Thread Tools | Display Modes |
May 25th, 2019, 21:34 | #1 |
Master Member
Last Online: Feb 28th, 2023 20:25
Join Date: Feb 2013
Location: Wirral
|
Is this an ABS fault?
Hi all.
Been a while since I've been on here. Had no problems with car and, well, just keep forgetting to pop in ! Until today. A few weeks ago I noticed that, on turning left, at slow speed, if I brake I get a grinding type noise from front N/S (I think). It's not pads / disc, I've checked them. The car has been MOT'd since this started and no problem with brakes flagged up (other than parking brake is barely working, but that's a job for another time!). It feels like the ABS is coming on for that wheel alone, is this possible? My gut instinct is sensor or reluctor ring. Does this sound right? I have to re-install VIDA on my work laptop, so haven't managed to read codes yet. Is there anything else I could look at in the meantime?
__________________
2003 V70 2.4SE Auto. Gone now. 2003 XC90 D5. Auto. |
May 26th, 2019, 09:06 | #2 |
Premier Member
Last Online: Mar 20th, 2024 18:26
Join Date: Jan 2016
Location: Cross Country
|
I seriously doubt it is ABS kicking it, you would have to be braking hard for that to happen.
ABS does not work at slow speeds anyway. Jack up the car, ideally with both front wheels off the ground. turn the wheel by hand at full steering lock and see if you can feel / hear anything
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
May 26th, 2019, 10:29 | #3 |
Master Member
Last Online: Feb 28th, 2023 20:25
Join Date: Feb 2013
Location: Wirral
|
Thanks.
It was only MOT'd two weeks ago and nothing flagged up. I did have a look over it while it was in the air (friendly MOT guy). It's so intermittent that I can't reproduce it on demand to start working out the cause. If it isn't likely to be ABS, then I have two faults as I had an ABS warning yesterday. Just re-installing VIDA at the moment to start checking the error codes. Unfortunately, in trying to get my cheap code reader (bought for the V70) to read the codes, I reset them, so the ABS warning has cleared. Hopefully it will be stored in the CPU.....
__________________
2003 V70 2.4SE Auto. Gone now. 2003 XC90 D5. Auto. |
May 26th, 2019, 10:50 | #4 |
Premier Member
Last Online: Mar 20th, 2024 18:26
Join Date: Jan 2016
Location: Cross Country
|
I thought you meant the noise was the ABS activating.
It could be something else, but you need to inspect
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
The Following User Says Thank You to SwissXC90 For This Useful Post: |
May 26th, 2019, 18:50 | #5 |
Master Member
Last Online: Feb 28th, 2023 20:25
Join Date: Feb 2013
Location: Wirral
|
Well, got VIDA back up and running and have a list if issues
Hey, ho! Most are minor. However, it has confirmed my gut instinct that whatever is happening under braking, I do have an issue with front N/S ABS. It's either sensor or ring, but won't diagnose further without taking things apart. Can the ring be seen without taking driveshaft out? I presume not. Might just buy a new sensor and ring so that I only have to do the job once.. I took a photo of the graph produced in Vida of the wheel speed on both front wheels ( I presume this data is measured by ABS rings). Blue is N/S. The intermittent drop outs are, I think, the cause of the issue.
__________________
2003 V70 2.4SE Auto. Gone now. 2003 XC90 D5. Auto. Last edited by Father Ted; May 26th, 2019 at 19:17. Reason: Add photo |
May 27th, 2019, 15:22 | #6 |
Master Member
Last Online: Feb 28th, 2023 20:25
Join Date: Feb 2013
Location: Wirral
|
I decided to bite the bullet today and have a look. I removed the sensor and, with the aid of an inspection camera, checked the ring. I found that it has indeed split.
So I've doused the strut bolts with Plus Gas and slackened, then refitted them. Checked the drive shaft will knock out and ordered a new ring. So that's next weekend's job ready.
__________________
2003 V70 2.4SE Auto. Gone now. 2003 XC90 D5. Auto. |
May 27th, 2019, 15:49 | #7 |
Premier Member
Last Online: Mar 20th, 2024 18:26
Join Date: Jan 2016
Location: Cross Country
|
Excellent diagnosis.
Shows how invaluable that VIDA can be and how powerful graphed results are. Shows also that not every issue is an electronic issue: your's is purely a mechanical issue.
__________________
XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
The Following User Says Thank You to SwissXC90 For This Useful Post: |
May 27th, 2019, 16:04 | #8 |
Master Member
Last Online: Feb 28th, 2023 20:25
Join Date: Feb 2013
Location: Wirral
|
Here's hoping.
To be honest, if the ring doesn't fix it, the sensor is easy to do...
__________________
2003 V70 2.4SE Auto. Gone now. 2003 XC90 D5. Auto. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|