Last year the same thing happened to me. I have a 1999 Ford Mustang 3.8L V6 Automatic that last winter, when it started to get cold, stopped starting. It sounds like it wants to turn over, it's not a battery issue, but won't get to the point where it has turned over. Last year, it started in a lucky warm span and it was taken to the nearest Ford dealer, but they could not find anything wrong with it. They cleaned the fuel injectors and did some basic maintenance and it worked fine, but I'm not sure it was because of that as it was starting to get warm after letting it sit at the Ford dealer for a few weeks. This winter, once again, when it started to get cold, the car would not start. What could this problem be?