CAR STARTS AND RUNS GREAT NO NOISE ETC, HOWEVER.

Tiny
ANONYMOUS
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 160,000 MILES
CAR STARTS AND RUNS GREAT NO NOISE ETC, HOWEVER WHEN I COME TO STOP IT MAKES A HUMMING SOUND. ALSO IF I PRESS THE BRAKE ON AND OFF AT STOP THE CAR HUMMING GETS LOUDER AND THE CAR SURGES. PS WHEN DRIVEING DOWN THE ROAD NO ISSUES ONLY WHEN I COME TO A RED LIGHT OR STOP SIGN. I CAN CRANK IT UP IN THE DRIVEWAY LET IT RUN NO MISSING OR HUMMING. THS GOT ME PUZZLE
Thursday, March 21st, 2013 AT 9:49 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
It sounds like you have a vacuum leak either going to the brake booster or the booster itself. Check that.
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Friday, March 22nd, 2013 AT 1:04 AM

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