What would cause vehicle not to start back on 1995 Dodge Ram 2500

Truck starts fine and runs great until its been running for a whils and engine gets good and warmed up then the vehicle will stall and cut off and will not start back until the vehicle is cooled back off... Truck does not over heat replaced the Idle Air Control because I was told it may be the problem but still having the problem any suggestions would be greatly appreciated

Asked by for the 1995 Dodge Ram 2500