Stalls when hot, confused

Hi, my name is Chris and I own a Thunderbird. (Wow, feels like AA must be like). Sorry for being rude and not introducing myself before begging help but I'm stumped.

Ok, I have a 1995 Thunderbird LX (4.6L V8) and I'm stumped. Yesterday I drove it downtown and everything was fine when I parked it. Half an hour it wouldn't start. Waited about 15 minutes, it started fine and drove about half a block then it stalled and wouldn't restart. Luckily, a co-worker was able to throw it on the shop rollback (I work at a motorcycle shop) and bring it to the house. Starts fine when cool, idles great until temp gets to about 1/4 heat. Then the car stalls and won't restart until it cools. Just before it stalls it runs rough and the exhaust smells like sulfur.

Have figured out it is not the coil packs, ignition module or temperature sensor (the brass one that screws into the head). I'm stumped and don't have a computer to check for codes. Chilton manual is useless for this. Found this forum in a google search and am hoping for help.

Thanks in advance,
Chris

Check the catalytic converters, that is where the sulfur smell is coming from, they may be plugged, or partially blocked.