When the Titans first came to Nashville they had a tremendous home field advantage. Back then the stadium was called Adelphia Coliseum, and it was two years before the Titans lost a game there. The stadium was rocking every week. People said it was the closest thing to a college home field as there was in the NFL.
Now the stadium is called L.P. Field, and it is not nearly the home field advantage that it once was. A lot of times it isn't full, and sometimes when it is, there are a lot of the other team's fans- like when the Cowboys were in town.
Ken Whisenhunt has talked about wanting to get that home field advantage back. How do they do that? Win. Fans want to watch a winner, and the Titans just haven't won consistently enough over the last few years. Once the start consistently putting a winner on the field, the fans will come back.