ABS on this car will be the death of me!

[moink10]

hey people, my abs light has been on solid for a while now so i got it on diagnostic machine and told me that speed sensor was knackered. so replaced that light stays on, so go get it reset but light stays on saying fault with another sensor. so basically i have replaced all the speed sensors and the abs light still stays on. diagnostic machine reads a different fault everytime i reset it. any ideas?????? its driving me crazy now!! help appreciated

 

[Fl@pper]

from experience of mine i would remove the abs unit / strip it and clean out the valve body as i bet it's all gunked up anyway but won't help sensor readin i will confess bit will at least mean u can check the control unit connections etc

 

[CIarkie]

I had a sensor replaced that showed a fault on VAG com, was fine but will grind and random occasions when braking at low speeds. It makes a horrible noise and often causes the light to remain lit until i turn the engine off and restart. Real PITA.

Will now be checking all connections and the valve as mention to see if this helps, probably worth two new sensors on the front aswell. Braking seems fine just the noise it makes and the occasional judder is a nightmare

 

[Fl@pper]

checked the wires ? especially the rear NS one from the exhaust heat has habit of breaking up inside

 

[moink10]

just rang SEAT and they have said they want £50 plus VAT just to have a look at it!!!

 

[suj]

tell them to.....you know what!
it probably just needs cleaning, or like flapper said wiring, if the wires bare, dirt/metal dust can cause havoc to the electrical current etc.

 

[CIarkie]

I have managed to clear mine (for now). Had all four wheels of and had a real good clean. Found that the N/S front caliper had a seized pin so had that all and made sure all were reseated and greased. Also checked the main connection in the engine bay which was completely tight with the plastic clamp clip. First time in months it has been clear for more than 100 miles