Won't Start - 92 100CSQ

[Baxcj at aol.com]

Car won't start.  When problem occured it had been warmed up and sit for a half hour.  It would stutter a bit and die.  After it cooled off, doesn't try to start at all.  Probably had some residual fuel.  Has a good spark.  Can't hear fuel pump run.  Tested plugin to pump from green to brown wire.  Have about 12V when ignition switch is in start position but nothing when just in the on position.  Could this be anything but a fuel pump problem?  Hadn't been noisy or given any problem previous to this event.  Is any special tool needed to replace the pump?  Thanks...
Dale