Abstract: A vacuum powered automatic swimming pool sweep for cleaning the bottom of a swimming pool comprising a hollow housing supported by at least one pair of reversible wheels, a reversible impeller disposed within the hollow housing, the reversible impeller including an impeller housing having an impeller chamber formed therein, a reversible impeller member having at least one pair of opposing vanes coupled thereto operatively disposed within the impeller chamber and interconnected to the pair of reversible wheels, a fluid flow conduit including a first and second fluid flow path coupled between an external vacuum line and the impeller chamber, a directional control in communication with the fluid flow conduit to selectively direct water from the pool through the impeller chamber to impinge on the movable vanes coupled to the reversible impeller member to drive the pair of reversible wheels.