The contact owns a 2005 Nissan Xterra. The contact that while stopped at a traffic light the vehicle stalled. The contact was immediately able to restart the vehicle however, the vehicle kept stalling. The contact restarted the vehicle however while entering a parking garage the vehicle stalled again. After several attempts the vehicle restarted. The contact emphasized that the failure was most evident while stopped or driving at slower speeds. On one occasion the vehicle stalled and failed to restart. The contact connected a DTC scanner and retrieved a fault code regarding the fuel gauge sensor that was contacted to the submersible fuel pump. The contact stated that after removing the fuel tank from the vehicle and while changing the internal fuel tank submersible fuel pump, he became aware that the positive wire of the wiring harness on top of the fuel pump and the fuel pump housing above were both charred. The contact was concerned that excessive heating and sparking had caused the failure. The contact purchased a new fuel pump to replace the defective one. The vehicle was in the process of being repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 200,000.