I have 2003 Discovery HSE. I ran out of gas 0.25 miles from home. I put 1 gallon of gas in it. I can't get it to go anywhere. It will start fine then shut off 30 seconds later. Any ideas how to get it to start and stay on? I can get it started, give it gas and it moves a few feet and acts normal, but after that it's like it's out of gas again. Any advice will be appreciated.