Brake pump runs when just about stoped on 2000 Mercury Grand Marquis

Brake pump turns on for 1 second or less ,just before complete stop(1 or 2 mph).No warning lights are on or flash on.Other wise brake system normal.This situation happens on dry surface almost at every stop.

by in Norristown, PA on July 22, 2013
1 answer
ANSWER by on July 22, 2013
Most likely a bad wheel speed sensor.