Sometimes, when braking gently from low speed, the ABS on my V6 kicks in on dry roads, so that the car comes to a juddering halt. The rest of the time the brakes behave perfectly, and the ABS warning light goes out as it should.
I assume that there is a problem with the sensors or the ABS ECU, although I notice that there is some corrosion on the serrated wheel which signals to the sensor. Will try a good clean of this and the sensor first, but would be grateful to hear if anyone else has met this and solved it.
If it helps, the ABS worked well on the icy roads back in January.
TIA
fastred
2000 Xantia V6 Exclusive
Xantia V6 ABS
Moderator: RichardW
-
- Posts: 8061
- Joined: 30 Dec 2004, 23:10
- Location: Somewhere in North Wales, Anglesey
- My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto
2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 70
No..
It wont be sensors or ECU, as yours is a late car, its MOST likely the ABS Ring on the drive shaft, it will have rusted through and will have a split gap and will be loose on the CV joint..
Seen this many a time on S2 cars...
I have sucessfully fix the problem.. I removed the ABS ring, cleaned the rust off the CV joint and the ABS ring, refitted it so the gap met and spot welded it in place with my MIG... been fine ever since..
Paul
It wont be sensors or ECU, as yours is a late car, its MOST likely the ABS Ring on the drive shaft, it will have rusted through and will have a split gap and will be loose on the CV joint..
Seen this many a time on S2 cars...
I have sucessfully fix the problem.. I removed the ABS ring, cleaned the rust off the CV joint and the ABS ring, refitted it so the gap met and spot welded it in place with my MIG... been fine ever since..
Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
Are you sure it's the ABS kicking in? It's just that I've never had my car juddering to a stop, even with full pressure on the brake pedal... The abs makes a clicking sort of noise but Xantia's don't judder around like other cars...
I'd be thinking it was a warped disk.
I'd be thinking it was a warped disk.
B564PLC - Red/Grey Renault 11 GTL 'Premiere'
-
- Posts: 8061
- Joined: 30 Dec 2004, 23:10
- Location: Somewhere in North Wales, Anglesey
- My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto
2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 70
No yoU know the difference between brake release and a wobble from a warped disk... It will be the abs ring.... They are only bad on s2 cars....
Paul
Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
Xantia V6 ABS
Great diagnosis, guys, thank you very much. OSF ring is split - looks as if a tooth is missing, although this may just be because the ring has opened up.
Two supplementary questions:
Is the ring actually moving round (I can move it by hand but it is quite stiff with rust) or is the "missing" tooth causing error signals to be picked up by the sensor?
Is there a simple way of de-activating the ABS until I can find someone to weld the ring up for me? Richard's idea of shrink fitting a new ring would seem to require more dismantling than I am prepared to take on.
Thanks again,
fastred
Two supplementary questions:
Is the ring actually moving round (I can move it by hand but it is quite stiff with rust) or is the "missing" tooth causing error signals to be picked up by the sensor?
Is there a simple way of de-activating the ABS until I can find someone to weld the ring up for me? Richard's idea of shrink fitting a new ring would seem to require more dismantling than I am prepared to take on.
Thanks again,
fastred
-
- Posts: 8061
- Joined: 30 Dec 2004, 23:10
- Location: Somewhere in North Wales, Anglesey
- My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto
2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 70
It will be the missing tooth/gap causing it.... Unplug the ecu plug under the bonnet just behind the battery... Lift the red clip and the plug comes away....
Paul
Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
-
Online
- Forum Treasurer
- Posts: 10814
- Joined: 07 Aug 2002, 17:12
- Location: United Kingdom
- My Cars: MK2 '17 C4GP 1.6 BlueHDi 120
'13 3008 1.6 HDi GripControl - x 984
It's probably that the ring has opened up, and the ABS is seeing an extra tooth, meaning it thinks that wheel has slowed more than the others, hence kicking the ABS in. You will need to get the shaft out of the hub to clean / weld it up anyway, and the new ring fitting is only heat the ring up with a blowtorch, then shove it on and let it cool. As it's the OS shaft it will be easy enough to do on the car - but in any case since it's a V6 you don't need to worry about disturbing the shaft and losing the gearbox oil as they run dry If you've got a 35mm deep socket, breaker bar, 21mm deep socket, and ball joint splitter, getting the shaft out of the hub is only a 15min job
Richard W
- mongoose100
- Posts: 206
- Joined: 18 Nov 2010, 08:33
- Location: Wellington, New Zealand
- My Cars:
Re: Xantia V6 ABS
Either unplug connector to ABS ECU or remove ABS fuse, that will then turn into conventional braking system - Warning light MAY stay lit up on dash too...fastred wrote:Is there a simple way of de-activating the ABS until I can find someone to weld the ring up for me? Richard's idea of shrink fitting a new ring would seem to require more dismantling than I am prepared to take on.
Thanks again,
fastred
Regan.
2001 Citroën C5 V6
1994 Citroën Xantia 1.9TD
2001 Citroën C5 V6
1994 Citroën Xantia 1.9TD