I have changed the fuel pump, filter, TPS sensor, Idle control module, upper and lower injector o rings, fuel rail seals, fuel regulator, ignition module, coil wire, cap, rotor, plugs,water pump, thermostat. When it is cool outside, like this morning 48 degrees, it wont start. i am pretty sure I can hear the fuel pump kick on. When it gets warmer out later in hte morning, it fires right up. On the flip side, when it is running and up to temp, it will stall out sitting at a light. RPM set at about 700. If I am sitting at a light, I have to keep just a slight amount of pressure on teh pedal and she stays running. Getting tired of driving with 2 feet at lights and starting on cooler mornings. Please help with suggestions.