ABS Problems (E30 M3)

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   Having finally figured out that the wires were OFF the ABS warning light on the dash it it apparent they were removed to hid a fault  

Basically with the ignition on I get all the usual warning lights, I start the car and they all go out (including the ABS light) but then about 10-20 seconds later (yet to actually count it properly) the ABS light comes back on and remains on....

Anyone have any suggestions on that... I know it's a bit vague but I've never had to do any work on ABS systems before!!?!

Cheers

Jon

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Jonmurgie Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Senior Member I Joined: 18-February-2003 Location: United Kingdom Status: Offline Points: 134	Topic: ABS Problems (E30 M3) Posted: 14-July-2003 at 23:27
	Having finally figured out that the wires were OFF the ABS warning light on the dash it it apparent they were removed to hid a fault Basically with the ignition on I get all the usual warning lights, I start the car and they all go out (including the ABS light) but then about 10-20 seconds later (yet to actually count it properly) the ABS light comes back on and remains on.... Anyone have any suggestions on that... I know it's a bit vague but I've never had to do any work on ABS systems before!!?! Cheers Jon


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m3geezer Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 31-October-2002 Location: United Kingdom Status: Offline Points: 234	Posted: 15-July-2003 at 12:28
	i'd start by looking at the sensors, these will throw an error if they are faulty, i don;t know how you check them though.

micky_h Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 17-February-2003 Location: United Kingdom Status: Offline Points: 798	Posted: 15-July-2003 at 16:37
	Does the ABS work,I mean have you tried an emergency stop from say 60 on a deserted road and attempted to lock the fronts up? Would tell you if the system is working or not.

jon90 Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 11-January-2003 Location: United Kingdom Status: Offline Points: 653	Posted: 15-July-2003 at 17:06
	As I said in a previous post,sneaky trick to get through MOT with dodgy abs.A few tips. Clean the abs rings,they get really clogged up with crud.Check all road wheel sensors using multi meter.Don`t know what readings you should get but hopefully one might show itself by being miles away from the others.Relays easilly substituted for known workers.If all the above fails take it to the experts at Bexley,hope this helps. Cheers Jon

Ratbark Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 06-March-2003 Location: United Kingdom Status: Offline Points: 242	Posted: 16-July-2003 at 20:42
	Jon The first thing to do is check the resistances of each sensor. If there's a reading which is the "odd one out" then it's pretty certain that it's faulty. You dont need any base figures to go from as they should allread approximately the same. If they are all ok, check the abs rings. Give them a good clean up and check for corrosion. If they have corroded badly then you will need to replace the hub. Just repeated everything that the other Jon said!! lol Hope this helps Regards Mark. Edited by Ratbark