ABS Fault: the saga endeth!

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deltic
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ABS Fault: the saga endeth!

Post by deltic » Wed Apr 27, 2016 5:03 pm

Some may recall my ABS woes and (slightly desperate!) attempts to fix it in this thread: http://www.bxclub.co.uk/forum/viewtopic.php?f=2&t=20911 and which I'm glad to rather belatedly report has now been fixed and the BX gaining another MOT.

Apart from those who previously advised me, my thanks go to Mark at Edwards & Sons who located the parts for a reasonable price and Barry at Bourne Citroen Centre who carefully worked out what turned out to be a succession of faults that went something like this:

1. The original rear ABS rather than the wiring had actually failed.

2. The first of my tested working spares was fitted, but then failed.

3.The second sensor was fitted, but there was still an ABS fault.

4.This fault then turned out to be a cracked front ABS ring which when replaced cured the ABS fault.

Although, we'll never know which was the original fault it was an unfortunate coincidence! In amongst all of this I think Barry also tried fitting a Xantia sensor, however this didn't work because the BX and Xantia hubs have a different number of teeth, although he is pretty certain that a BX fitted with Xantia hubs and sensors should work and is going to try this at some point. Xantia sensors are much cheaper and readily available.

Just for information the rear BX sensor I removed from a rear arm was manufactured by ATE (and fitted with Ford plugs) and had the following numbers on it if anyone would like to investigate further:

340.804/022/001
10.0721-1403.1
91540 29850

And they were Citroen part number: 91537913

At some point I might contact ATE to see if they can advise further.
1991 BX GTi Auto, grey, 133,000 miles (2015 & 2017 Citroen Classic Challenge veteran)
2006 C4 VTR+ 2.0 Coupé, silver, 60,000 miles

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deltic
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Re: ABS Fault: the saga endeth!

Post by deltic » Wed Apr 12, 2017 1:39 pm

Not quite endeth, I spoke too soon of course. After 6 weeks of not using the car over the Christmas period the ABS light came on again just when the car was due this year's MOT. So back to Barry again who patiently (thanks!) worked through the ABS system, got it working and got an MOT pass. But on the way back from the MOT test it failed again! As we both had spare ECUs we swapped the one on the car and it now seems OK. Probably. Another year for a fault to manifest itself before the next MOT...
1991 BX GTi Auto, grey, 133,000 miles (2015 & 2017 Citroen Classic Challenge veteran)
2006 C4 VTR+ 2.0 Coupé, silver, 60,000 miles

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Tim Leech
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Re: ABS Fault: the saga endeth!

Post by Tim Leech » Thu Apr 13, 2017 4:37 pm

I need to get the one on my TZI looked at as its currently disconnected.
1963 VW BEETLE 1200
1985 BX 19GT Mk1
1991 BX 19TZI Auto A/C
1994 Xantia 1.8i SX
1972 Morris Marina 1.8 SDL
1979 Rover SD1 V8-S
1980 Morris Marina 1.7HL
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Re: ABS Fault: the saga endeth!

Post by fmalloch » Thu Dec 07, 2017 4:20 pm

Suggestions have been made on this thread that Xantia Mk 1 or Peugeot 405 ABS sensors may fit. Can anyone confirm this? I understand that the plug needs changing and it has been suggested that this only requires soldering. Is the cable a simple screened cable like an aerial cable? If not, how should the wiring be effected?
I'm a novice with this and my garage guy is reluctant to butcher a replacement unit unless he is sure what to do!

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Re: ABS Fault: the saga endeth!

Post by RobC » Mon Dec 11, 2017 12:33 pm

Yes, the cable is simple coax - like a tv aerial.

Not sure if 405 or xantia sensors will fit but if so, it's easy enough to do the join between old and new underneath the seats (if doing rears).
1991 Citroen BX 16v

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Jaba
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Re: ABS Fault: the saga endeth!

Post by Jaba » Fri Dec 15, 2017 5:40 pm

RobC wrote:
Mon Dec 11, 2017 12:33 pm
Yes, the cable is simple coax - like a tv aerial.


Except that the inner cable is multistranded not solid core. Realistically any type of screened cable seems to work.
The Joy of BX with just one Citroën to my name now. Will I sing Bye Bye to my GTI or will it be Till death us do part.