Rough idle when cold

[VsV]

Hi everyone.
My 318is has a rough idle when it is cold and stalls if i don't rev it but when it warms up everything is ok. What could be the problem?
Thanks,

[monty23psk]

I would start with checking for intake leaks. When the rubber hoses are cold, if they are cracked it will not seal vs when warm the rubber seals better. ICV could be sticking and need a good cleaning. It can be other things but I would start there.