ABS turns on without pushing brake pedal??

[jrbnc]

Hi,

Lately when travelling at very low speeds <10mph, i can hear the abs kicking in, but I cant feel anything. And I am not stepping on the pedal.

Before this symptom, what felt like the front right abs was kicking in at very lowspeed but only when I would step on the pedal. So from reading around it seems like this could be that wheel speed sensor. I already tried to clean this sensor, is there a way to test with a meter or something?

As for the newest problem i am kinda stumped because if i dont step on the pedal, nothing should happen right?


Thanks a lot,

Josh

Car is a 88 190e 2.3 8v

[joe p]

Bad wheel speed sensor or exciter ring would be my forst assumption.



Try popping them out of the front and cleaning the shavings off.



Joe

[Mick J]

The pump runs briefly to pressurise the system when speed first reaches about 5mph.