[mustang418]

Hi, I have a 94 Ford mustang with 3.8 liter engine with a 5 speed. We have been having a runniability issue. When you start the car in the morning, it runs really rough to the point of dying. If you try and drive during this time it acts as tho there is just no power. When I push on the gas, sometimes it will just keep bogging and then bam it takes off! Once the car is warm it runs like a dream but for those first 10 to 15 mins it lacks power. It has an O2 sensor code. I replaced all four O2 sensors, mass air flow sensor, egr valve and the fuel pressure is between 35 and 40 lbs. I'm at a loss right now. Could it possibly be a temp sensor problem? Or any other ideas on what it could be?