A PLASTIC PIECE HOLD TWO MALE HOSES TOGETHER MELTED FROM THE HEAT OF THE ENGINE'S MANIFOLD CAUSING THE ENGINE TO REACH POSSIBLE DAMAGING TEMPERATURE DUE TO THE LOSS OF COOLANT. THE VEHICLE WAS BEING DRIVEN ON THE HIGHWAY AND STREET BEFORE THE VEHICLE STARTED TO STEAM FROM COOLANT LOSS ONTO THE MANIFOLD. THE PLASTIC PIECE THAT MELTED WAS ENOUGH TO CAUSE A SMALL FIRE ON THE MANIFOLD.