Stored codes checked by a professional and found nothing that stood out. Maybe the MAF and the O2 sensor. Replaced the O2 sensor. Car runs okay at 75 mph. But hold a steady speed at 65 and can feel engine miss. When starting off from a stop, car will not accelerate. Like it's got a bad accerator pump in the carburetor, but this thing is fuel injected. Practically dies. Put the car in neutral and rev the engine then put car in drive will get the car moving.

Have you checked the timing?