I replaced the fuel pump with a Walbro recently. It has been running perfectly for about 1 1/2 months now with no problems in town, highway, or at the track. Then all of a sudden my wife took a long trip away from home and it started to die on her. She would be traveling down the road and it would just die. She would pull over and wait 5-10 min and then the car would start again and then run for anywhere from 10-100 miles and die again. My question would be if the fuel pump relay could have gone bad? Car has 140K on it. I haven't looked at it because it is 500miles away now and I can't get to it.

Could be the under hood fuse block, 2000Silverbullet had a similar problem a few years back and thats what it turned out to be.
Not saying its not the pump but why would it fail then start working again.....odd?

Search for the bullets post about engine dieing.