Idle good in summer but winter a different story

[hsmith]

Good Morning,

Usually when I started my car up it would idle kind of fast until it reached a certain temp, and then settle down. For about the past two year the fast & settle down is gone. In the summer it will idle pretty good, but no fast or settle down. In the winter it will not idle at all. I'm just tired of trying to keep part of my right foot on the brake while keeping the pedal down so she will run. Which direction should I go in to solve this problem? Merry Christmas.

Hugh Sr.

1984 190d (W201) 108,345