CAUSING THE CAR TO JUMP FORWARD. BY PUTTING CAR IN NEUTRAL AND DEPRESSING THE BRAKE ON A GRADE, WHEN I HAD COMPLETED, I NOTICED THE THE RPM GAGE WAS AT 4000 RPM WITH BRAKE ON. THE VEHICLE WAS STATIONARY AT THE TIME. THREE TIMES IT HAS HAPPENED AS I SLOWED DOWN AND IT LURCHED FORWARD STRIKING OBSTICALLS. WHEN BRAKING IT POSSIBLE TO ENGAGE THE GAS PEDAL