MB DOC,

I used some carb cleaner on the throttle plate, but when I open it I can still see gunk underneath.

Do you think the dirt is blocking air flow sensor

Im pre-occupied with exams now, but whenever it is cold, close to the freezing mark, the car starts really funny

like I desribed, during cranking rpm needle will bounce up to 4 - 5 k rpm and engine seems like it is choking and then it starts.

Does this sound like something any of you encountered before?

Thanks for everyones input