Brake problem!

daznkel · 26th July 2015, 19:35

This evening I was taking my daughter home and as I slowed from 30 to a stop to turn into her street there was a juddering coming through the brake pedal accompanied by a grinding noise. It was as if the ABS was trying to cut in, but no sign of any ABS light on the dash. Also the braking efficiency is not greatly affected, it still stops pretty quickly.
I stopped outside her house, checked the fluid level and all was well. Also none of the pads are low. The front discs and pads have done about 3k since I last replaced them and the rears are fine also. The grinding noise appears to be coming from the pedal area not the discs etc.
I am thinking it maybe an ABS reluctor ring. However, anyone else have any other suggestions?
As a precaution I left my car there as the drive home involves 6 miles of dual carriageway and didn't fancy my chances if I had to stop quickly from 70mph!

klarzy · 26th July 2015, 20:27

Quote:

Originally Posted by daznkel

This evening I was taking my daughter home and as I slowed from 30 to a stop to turn into her street there was a juddering coming through the brake pedal accompanied by a grinding noise. It was as if the ABS was trying to cut in, but no sign of any ABS light on the dash. Also the braking efficiency is not greatly affected, it still stops pretty quickly.
I stopped outside her house, checked the fluid level and all was well. Also none of the pads are low. The front discs and pads have done about 3k since I last replaced them and the rears are fine also. The grinding noise appears to be coming from the pedal area not the discs etc.
I am thinking it maybe an ABS reluctor ring. However, anyone else have any other suggestions?
As a precaution I left my car there as the drive home involves 6 miles of dual carriageway and didn't fancy my chances if I had to stop quickly from 70mph!

I think turning the corner is the key statement.... check for a momentary connection in the ABS sensor cable... any signs of twisting or damage... I think as you turned the wheel the connection was lost for a second due to the cable being broken or damaged internally, when you straightened up all was ok again?

I would get a new sensor & cable and fit it...

trikey · 26th July 2015, 20:37

I have changed a few rear wheel bearings due to this.

Jakg · 26th July 2015, 20:44

The ABS light only comes on if theres a fault - not if it cuts in generally.

daznkel · 26th July 2015, 21:02

Quote:

Originally Posted by klarzy-dials.com

I think turning the corner is the key statement.... check for a momentary connection in the ABS sensor cable... any signs of twisting or damage... I think as you turned the wheel the connection was lost for a second due to the cable being broken or damaged internally, when you straightened up all was ok again?

I would get a new sensor & cable and fit it...

Thanks for the reply. Maybe my statement was a bit misleading. I was braking on a straight, to a stop before turning right. That said I will check for continuity tomorrow.

Quote:

Originally Posted by trikey

I have changed a few rear wheel bearings due to this.

Ah ok. I would have naturally assumed that is was the fronts. But will bear this in mind. Thanks!

Quote:

Originally Posted by Jakg

The ABS light only comes on if theres a fault - not if it cuts in generally.

Ok. Thank you!

Heddy · 26th July 2015, 22:21

When changing my front sensor a few weeks back (light on) I found it pulled tight and wrapped around the droplink.

Mike Noc · 26th July 2015, 22:25

If it only happened the once then you may have been braking over spilt diesel or something similar, and the ABS was just doing its job.

daznkel · 26th July 2015, 22:52

Quote:

Originally Posted by Mike Noc

If it only happened the once then you may have been braking over spilt diesel or something similar, and the ABS was just doing its job.

I took it for a tentative run before I left it and it happened every time I braked. Initially all seems ok then as speed reduces, the juddering starts.

I replaced the front NS complete strut on Friday as the hub was whurring. But all has been well until now (over 250 miles)!

More than likely, a duff cable or the reluctor ring has picked up some metallic crud from somewhere.

It is going to a friends garage tomorrow as I need to go to Bristol. Got to drive a Ford F***us instead of my ZT now!

26th July 2015, 19:35	#1
daznkel Posted a thing or two 04 MG ZT+ 190 XPG & 99 (T) Dealer Launch 75 V6 Connie Auto Join Date: Oct 2012 Location: Plymouth Posts: 1,080 Thanks: 615 Thanked 456 Times in 309 Posts	Brake problem! This evening I was taking my daughter home and as I slowed from 30 to a stop to turn into her street there was a juddering coming through the brake pedal accompanied by a grinding noise. It was as if the ABS was trying to cut in, but no sign of any ABS light on the dash. Also the braking efficiency is not greatly affected, it still stops pretty quickly. I stopped outside her house, checked the fluid level and all was well. Also none of the pads are low. The front discs and pads have done about 3k since I last replaced them and the rears are fine also. The grinding noise appears to be coming from the pedal area not the discs etc. I am thinking it maybe an ABS reluctor ring. However, anyone else have any other suggestions? As a precaution I left my car there as the drive home involves 6 miles of dual carriageway and didn't fancy my chances if I had to stop quickly from 70mph! __________________ Click HERE To Be Added To The South West Members Location Map Upgrades/Mods so far: Custom Angel Eye DRL's, MG7 Rear lights, Custom Door Cards, MGR Plates, Red Alcantara Seats, Black Oak Dash, Powerflex bushes, Plenum Spy Mod, Rear Light Seals, 5000K HID Kit, Navall 3 DD, Blue LED Conversion, Custom badges, Union badges, Flip key. Working on more! [SIGPIC][/SIGPIC]

26th July 2015, 20:37	#3
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,772 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I have changed a few rear wheel bearings due to this. __________________ Lest we forget..

26th July 2015, 20:44	#4
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	The ABS light only comes on if theres a fault - not if it cuts in generally.

26th July 2015, 22:21	#6
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	When changing my front sensor a few weeks back (light on) I found it pulled tight and wrapped around the droplink.

26th July 2015, 22:25	#7
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,550 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	If it only happened the once then you may have been braking over spilt diesel or something similar, and the ABS was just doing its job.