Car stalls on idle, quits randomly at red lights

Stalls on idle, quits running randomly when stopping at red lights, sometimes will "sputter" while driving. Will usually start up fine on cold start but once the engine warms up, then the problem starts. The engine will sometimes die, then once it cools off a bit, will start right back up. When it quits, it's like something just shuts off the fuel and it kills the engine. It is getting fire, have checked plugs, wires, have replaced fuel pump, I have checked the catalytic converter, it isn't clogged. Also, it shows no codes