I've searched most applicable threads and haven't found a problem that mirrors this problem exactly. My 1985 190e 2.3 hesitates upon acceleration after driving for about 20 minutes. The key is, that it runs fine up until this point. The idle speed seems to drop prior to these systoms occuring.

This just started about 2 months ago. It gets worse with the A/C on. I have to pump on the accelerator to get it to begin to move. After it gets up to around 5 miles per hour it runs just fine. It's getting annoying.

I just had the car tuned up along with a total fuel injection system cleaning by a mechanic. This did not cure the problem.

Also is there an idle adjustment on this car?

Any help will be greatly appreciated.

Thank you,

Brian