right the abs light has always been on since i got the car.

so yesterday i changed all the wheel sensors but the light was still on

then this morning i was zip tying some cables up out of the way and

noticed that the green relay under glove box was not plugged in properly

plugged it in and the light went out

then just went out for a drive and at first the brakes work fine then the

pedal drops then pulses/vibrates 3/4 times and then the car stops slowly.

then the brakes dont work for a few seconds after this has happened and

the pedal is rock hard wont stop at all .

anyone know what this could be

 

Dont the ABS pressure pumps somtimes fail?? So the guy that had the car before you could have disconected the ABS completly with that green relay. Because of the failed ABS pump. This would probably put a light on the dash.

When the relay is conected can you hear the ABS pump work at any time??

This would probably explain your hard pedal and bad brakes!!

Just an idea.

Bruce

 

Hi,

Are you sure that all ABS security lamp are OK ?
(orange lamp AND red lamp)
Test your red lamp with your hand brake.
When you switch your engine on, they should light on during five secondes.

Other point, if you have pressure probleme with ABS Mark2, you have 2 lamps switched on : orange AND red lamp, toghether.

If you have orange lamp on, it is just an electronic problem.
Often, it is dirty sensor, dirty wheel sensor, or to much play on bearing (front or rear)

Regards

Claude

 

broos3 definitely not the pump failed, or brakes would always be hard to push

claude is correct

 

Cheers guys thats interesting. Always good to gain some more info on things.

Bruce

 

will be going over to jaycos in a bit as he has an abs tester. will let you know how it goes

 

rock hard pedal is to much pressure
but then the red light should come on