Engine stutter

Thanks Roy. The plugs and wires were replaced in the last sixty days. I just found out the computer has logged EGR codes p0404 and p0405. It has also logged a random misfire code p0300 that the EGR valve might cause. I believe my problem is a lean fuel mixture and I know now that the EGR circuit needs attention. What I do not understand is why the engine runs good until it comes up to temperature. I had been under the impression it ran on internal computer mapping until it warmed up but I guess not. When I get the EGR problems solved I will see what that does for the car. Please add anything you like and thanks for responding.

Hi Roy. I removed the EGR valve and I can hear the loud sounds of the exhaust and the vacuum leak sucking noise. The two round ports are clean and free of debris. I will install a new EGR valve. I have a fuel pressure gauge and I checked the pressure at the fuel pressure regulator. It is 48 lbs key on engine off and 46 lbs with engine running. Speeding the motor up and down has no effect on the pressure. Do you think this is enough pressure for this car?

Thanks Roy. I will get a new fuel pump on the car also. This will take a few days. Thanks again for all your help with my car.