[missionangeluk]

Hi all
I have had a little look through previous posts but couldnt find the answer so as I am new on here be patient if you are repeating yourself.
I have a 318 CI Auto convertible. I have noticed recently that when I brake at lights or when the car is in neutral the car vibrates and feels like it is going to cut out. I had a full service done today and the guy coulnt see what the prblem was and has recommended another garage, but I would like to sound like I know what I am talking about.
Any info would be much appreciated.
cheers