AT RANDOM TIMES WHILE DRIVING VEHICLE WILL SHUT OFF CAUSING SUDDEN DECREASE IN SPEED, THEN RESTART ON IT'S OWN WITHIN 10-15 SECONDS. WHEN CAR SHUTS OFF ALL DASH LIGHTS TURN OFF AND THERE'S NO THROTTLE RESPONSE. THE LAST TIME IT SHUT OFF I WAS GOING AROUND A BEND AND CAUSED CAR TO COLLIDE WITH GUARD RAIL.