2000 JEEP GRAND CHEROKEE HAS IN PAST REVVED UP AND ACCELERATED SUDDENLY. BUT I WAS ABLE TO STOP IT WITH BRAKES. TODAY, 8/4, I WAS PARALLEL PARKING AND WENT INTO REVERSE. WHEN I WENT INTO DRIVE, THE JEEP REVVED UP AND ACCELERATED ON ITS OWN. I APPLIED BRAKES BUT CAR KEPT ACCELERATING AND TAPPED CAR IN FRONT OF ME. LUCKILY NO ONE WAS HURT, BUT EASILY COULD HAVE BEEN. *TR