So after changing 8 coils and mass airflow sensor..and $ 1,400 later my love is still acting up. This happens mostly in the morning. I start it..it settles and starts shaking, sometimes goes away after a re-start, sometimes check engine light comes on. Now they are cleaning up the injection system... Anyone else has had this problem???? It went for days without shaking, and then one day starts again...they said i've had many misfires on both sides even after all they have done to the car..back in the shop since saturday once again..

Help!!!