95Vert,
If it sputters and dies slowly, I'm not sure what's up.
But, if it's running fine one second and then dies instantly like somebody reached over and turned off the key, then it's your distributor stator.
It's also called the Hall Effects sensor or the PIP module (Profile Ignition Pickup), but the Ford parts list will call it the distributor "stator".
If it is your stator, the car will eventually start dying while driving down the street, and not just die while idling. Not safe! When mine went out, it was eventually dying once or twice a day. After I let it cool down for 10 minutes or so, it would fire back up. Problem is the Hall effects sensors are heat sensitive. Eventually heat finally kills them.
The part costs about $50.00 at the Ford dealer. The bummer is that the distributor has to be removed from the car to install the thing! The sensor portion slips over the center shaft of the distributor, so the drive gear has to be removed from the bottom of the distributor to install it.
Good luck.