Hey, I just had this same problem (sorta)
mine would cut out, and start back up.. BUT it was combination of my coil and fuel pump (and the TFI unit since it wouldn't start afterwards, basically a luck of draw that it would start)
So, check your spark again (sorry if you already have) and then get your pump replaced.. replace coil if spark looks weak... if your car takes more than a few turns to start, maybe you want to replace the TFI unit, (as mine now starts almost right away, even when really cold/wet outside)
I don't know if TFI has anything to do with the smooth running of the car once its started, or does the TFI come in just to start it.. (hopefully someone can answer that for me!)
------------------
94 GT (triple black)
FMS 95 17" Cobra R's / AL Driveshaft / 3.27's
K&N, 12* timing, 180* thermostat, 190 lph
MAC Shifter/Gauges/Pedals, Euro Clear Projectors & Corners
My CAR!