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