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 ABS light
Author Message
huwwatkins
Site Subscriber

Joined: 10 Jun 2004
Posts: 2317

Posted: Sat Feb 05, 2005 7:52 am

My m8 is just about to buy a 1.9 TD 19. Only thing that concerns me is that when I was trying to move the car in a muddy field the ABS light flickered on/off when it was running, now im assuming this shouldnt be doing it. Whats the likely cause and more importantly, easily solved? I've heared ABS systems are a swine to work on...


Cheers
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Sat Feb 05, 2005 8:20 am

could be anything!

Reley, leaky modulator, accumulator etc etc

If however you were tryign to move and it was wheelspinning then the lights may flash on and off. They will also do that if the sensor and reluctor ring ws covered in mud.
Neal
Forum Moderator

Joined: 18 Feb 2004
Posts: 7432

Posted: Sat Feb 05, 2005 8:24 am

Gah, ABS! Evil or Very Mad
huwwatkins
Site Subscriber

Joined: 10 Jun 2004
Posts: 2317

Posted: Thu Feb 10, 2005 2:44 pm

Right, drove the car back yesterday, ABS light seemed to pop on and off when it felt like it. Most likely cause a loose lecci connection? Only other thing i can think of, is the previous owner fitted disc brakes to the back (god know why) so maybe this has fecked the ABS up good and proper.
I'm right in assuming an illuminated ABS warning light is an MOT fail?
Neal
Forum Moderator

Joined: 18 Feb 2004
Posts: 7432

Posted: Thu Feb 10, 2005 3:21 pm

So if you cant fix it in time for the MOT, take the ABS bulb out Smile
Sic Puppy
Site Subscriber

Joined: 01 Feb 2005
Posts: 728

Posted: Thu Feb 10, 2005 3:30 pm

LOL...Nice
huwwatkins
Site Subscriber

Joined: 10 Jun 2004
Posts: 2317

Posted: Thu Feb 10, 2005 3:34 pm

One day Neal will give a serious helpful answer Wink Razz
schakal
Spammer

Joined: 27 Jul 2004
Posts: 5717

Posted: Thu Feb 10, 2005 3:34 pm

can it be one of those pad thickness sensors by the front wheels ????

me thinks they might go loose very easily , i suppose they would light the ABS warning up would not they?
Neal
Forum Moderator

Joined: 18 Feb 2004
Posts: 7432

Posted: Thu Feb 10, 2005 3:37 pm

huwwatkins wrote:
One day Neal will give a serious helpful answer Wink Razz


LOL WTF, I am always being helpful!

The ABS bulb removal suggestion was dead serious BTW...
huwwatkins
Site Subscriber

Joined: 10 Jun 2004
Posts: 2317

Posted: Thu Feb 10, 2005 3:37 pm

Hmm, I was under the impression that was a totally different system as i've got it on my 'non ABS' TD. Just out of curiosity, what makes the ABS system on the 19 'so bad' ?
Chet T16
Retroholic

Joined: 12 Feb 2004
Posts: 5685

Posted: Thu Feb 10, 2005 5:53 pm

Depends which system it is

Bosch:

ABS add-on for standard brakes. Works quite well and is reliable

Bendix:

Completely independant braking system, quite unreliable. If it works it works extremely well. If it doesn't work you've got no brakes. Horrible pedal feel too

Bendix was phased out in early 93

Neals right too, more enterprsing individuals modify the ABS light so it lights up with the oil light or similar so it comes on with the ignition then goes out Smile
roddy21t
Site Subscriber

Joined: 05 Jan 2005
Posts: 589

Posted: Thu Feb 10, 2005 6:32 pm

I think they are a nightmare on the 21t's aswell, on mine, if the light comes on after going over 12mph (i think) and stays on, then its a ABS ring (maybe the teeth are corroded or simply need cleaning very gently with a soft wire brush) if the light does something different then its most likely a sensor (they can be tested with a voltmeter) i dont think the sensors are expensive from Renault, but if someone has been messing with the rear brakes then it could be that, id get the sensors checked then take it from there.

My ABS light stays perminetly on, the front rings need replaced on mine, but she still passed the MOT, when a ring has gone it confuses the ABS system, this then causes the ABS system to shut down completly (the light stays perminetly on) your brakes then should go into the safe normal mode, and not have the pedal pushing back on your foot when trying to press it.
Chris H
Forum Moderator

Joined: 02 Mar 2004
Posts: 19978

Posted: Fri Feb 11, 2005 1:26 am

righty if the car has ABS then the rear brakes will be discs as standard.

They never fitted ABS to the drum brake models, although the new meganes and clios do.

Anyway just removing the bulb is a fail if the ABS systems there it has to have a working bulb. Wiring it in with the oil light should be enough to pass it.

If the bulbs comign on and off I would say give the reluctor rings a good wire brushing.
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