Triumph Repair: Car dies after it warms up, eclipse gs, torque converter

Question
Hi,  I have a 91 eclipse gs with 170,000 miles on it.  When I got it it had a idleing problem.  It sounded kinda like it had a vacume leak.  I checked and it didn't so I replaced the idle sensor switch and tried to adjust it and the idle screw just right.  I have idleing good now but after the car warms up and I turn it off.  If I start it again it some times dies or if I come to a stop it dies.  Only when it's warm though.  One person said it could be that I am loosing fuel pressure.  But I changed the fuel pump when I got the car.  Any sugestions would be great.  Thanks

Answer
this isn't a Triumph question, but, i have seen some problems like this. one was the automatic transmission's torque converter locking up. when it starts to die put it in neutral ( I assume it is an automatic ) if it keeps running that might be it. also fuel injected cars have a warm-up sensor that if it goes bad it will flood the engine. if you can find it it might be bad. Dave