Please help, I have a e46 318i, had a problem with the fan, changed the blower limit switch job done, heat not coming into the footwell, heat to top of car ok, renewed thermostat and water pump, flushed the radiator bled the systom, still no heat on the foot well, been told the head gasket, which I have now changed and still no heat in the foot well. would be gratefull for any help.