when at stop light or full stop the engine revs up with brake pedal depressed on 2000 Saturn SL1

the harder i put the brake pedal down the more it revs up; then it will just return to normal --- doesnt happen all the time at periodic times

by in Fargo, ND on September 13, 2012
2 answers
ANSWER by on September 14, 2012
seek diag on this as someone needs to see car to give an opinion
ANSWER by on September 17, 2012
What does it do when in park? normal idle , but then fluctuates when stepping on brake pedal? If so have brake booster checked.