The contact owns a 2009 Ford F-150. The contact stated that the engine warning light was intermittently illuminated. The contact stated while driving at undisclosed speeds and making sharp turns, the vehicle stalled. The contact was able to pull over to the side of the road and depressed the brake pedal until the vehicle responded as needed. The contact stated that the failure had been recurring while making sharp turns and while coming to a stop at traffic lights. The vehicle was taken to the dealer, and the contact was informed that the failure could not be duplicated. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 60,000.