Engine Performance problem
1994 Eagle Summit 4 cyl Front Wheel Drive Manual 150000 miles

The car suddenly stalls out after the engine is warmed up, usually. It doesn't matter if the tank if full or almost empty. It does it when i am at cruising speed or idling at a stop sign, but mostly when i am stopped. It is not throwing any codes. It is the 1.5L engine. I have replaced fuel pump, fuel filter, O2 sensors, distributor, cap and rotor, plugs, plug wires, and have taken it to two different dealerships and they can't figure it out either. When it stalls out it is getting gas and spark. It will usually start after it sits for a bit but then does it all over again the next day. Please help!