When I push on the brake pedal I can feel the pedal goes down a little more then usual then as I'm pushing the pedal it comes back up a little. I feel this in my foot. My abs light is on but my wheel speed sensors in the front have torn wires so I want to say that the light is on because the sensors are bad. Is my abs light related to this problem? I've had the abs light on for a while now but the brake pedal never gave me a problem . This just started a week ago.