Technical Fiat 500X 1.4 Idle speed flutters once driving until warm,

[steveclimb]

Fiat 500x 1.4 popstar, car started fine and after i pulled away become hesitant then stopped with Start/Stop not available. RAC attended and indicated that coil pack on cylinder 1-2 was an issue. Had the coil packs all changed and the plugs. Started fine and sounded a lot better. left it to warm up and drove car home no issues. Started this morning with no issues until i pulled away, become a bit lumpy and the revs kept on dipping. Gave it some revs and it drove ok. Once i have a few minutes of warm in the engine the revs stay constant. Dont think fuel filter is issue as it clears when warming up. Is there a sensor that could be an issue.

 

[DGPunto]

Best to get a copy of MES and see what codes there are (if any) and to look at the live running information. Then hopefully we can help rather than guessing - unless someone has had exactly the same issue on the same engine