Mitsubishi Repair: Magna ks verada 1992 v6, coolant temperature sensor, valve stem seals

Question
ok heres my question the car runs fine when cold then to warm then starts to loose power then finally stalls then can not start car again till it cools back to cold again have replaced valve stem seals head gaskets valves and have timing set right pls advise

Answer
CJ,
When the engine is cold, the car's computer is relatively passive.  Once the engine warms up, the computer begins to take in readings from various sensors in the car and regulates ignition timing, air flow, fuel flow, and monitors emissions.  If any of these sensors are sending false readings or if the computer itself is damaged, you can experience these problems.  Have you mechanic give you a full diagnosis, including checking the engine coolant temperature sensor, ignition timing, and even the computer itself.
Good luck!