Abs Help

[fluk3]

help my abs lamp lights as soon as I start driving

things I have done

1 sensor changed
all tooth rings cleanet and ok
I have measured all sensores all signals ok

and still the same

[Ian Simmonds]

Did you fit new plasic caps (the silly little white things)...?

If not, try putting 4 new ones on, they are very cheap and quite crutial for gapping the sensor to the toothed ring... Even slightly out on one sensor and the Anti-Blocking-System will fail it's rotational test and put the ABS light on.

Chased an ABS fault on our WR for 2 years... Finally spent about £2.00 on the caps and cured it in an hour...

[Error404]

never heard of or seen these caps Ian, have you got any more info - pics, part numbers etc?

[DJones]

never heard of or seen these caps Ian, have you got any more info - pics, part numbers etc?

http://cgi.ebay.co.uk/NEW-AUDI-UR-QU...item3cac9f8928

Not sure if the link will work..

[Error404]

Thanks

I'm guess this is a UR thing? AS can't see how or where you would fit them on the B3 / B4 hubs

[Ian Simmonds]

Ah, good point... I am making the possibly somewhat flawed assumption the two share the same set-up... Sorry if this isn't the case.

[Error404]

It would make it easier to set up the dambed things up if they did

help my abs lamp lights as soon as I start driving

things I have done

1 sensor changed
all tooth rings cleanet and ok
I have measured all sensores all signals ok

and still the same

Check the fuse in the ABS relay under the dash

[fluk3]

if you takes fuse under the dashboard out then the abs lamp lights constantly.

my lights when I put the ignition on and goes out when I start the car as it should

but when I start driving it starts to lights again

the plastic things ? I have not seen anywhere and do not think they are for my car

and I forgot its a S2 3B 1991

cheers christian bogh

[Error404]

Sounds like a sensor fault maybe - distance from the toothed ring is not right on one sensor

[Flat on my back]

.

Sounds like you need to get the abs ecu interogated, just like the engine ecu...there could be many faults.

Time to find a friendly garage me thinks.

[Jonas_R]

A while back my ABS light came on every time I had boost on the car. I had fixed a hose with holes that went over the battery and down to the diff controller. This hose is connected to a one-way valve that insures that the diff wont see boost. Because I fixed the hose and then one-way valve was broken then the diff would see boost all the time and then the ABS would be turned off.

Worth checking?

[fluk3]

the abs ecu interogated ? Does anyone know where it is ??

distance from the toothed ring I tjækket several times but how sensitive is the sensor to the distance

[fluk3]

but the car is due for inspections tomorrow so I'm about to run out of time

[Evilgoat76]

VAG-Com will read the ABS ECU through the normal route.

[fluk3]

hmm are you sure?

is abs brakes supported with vag-com ?