Greetings

I recently purchased a 1991 e300 with a little less than 100k mi. It's in great shape, but idles terribly. This occurs at cold and warm tempuratures, but actually seems almost worse at warm temps. I don't really have a Mercedes specialist in my town, so I took it to my regular mechanic. He tuned it, cleaned injectors, and did all the "normal" things, but the problem is still there.

I would appreciate some advice from members who have dealt with this.

Thanks,

Roger