Join the club. Factory fuel pumps are starting to go at 80k+. You wouldn't believe how many people have the same problem on this forum. Search for 'fuel pump' etc and you'll find a lot of good stuff.
If however, it turns out that it's not a pump in your case then check for shorts, check fuel intake wiring, fuel filter - could be any of these. However, yours sounds exatctly like my problem and it's a fuel pump in my case. Good luck
