I've had a serious problem with my car just feeling very sluggish after it warms up, and when giving light throttle going with the flow of traffic, the cars RPM's go up and down, almost as if it's going in and out of gear. It's just like a constant power surge on and off. My cars an auto stick and it was also being very clunky and so forth, so after research on the benz forums, everyone said for sure it had to be the MAF. Cleaning it didn't help for long, so $175 later (replacing it), the prolblem still exists, although the tranny does shift much smoother now.

Also, this really only happens after it's been driven awhile. After driving on the interstate it will definietly act up. If the car sits for a decent amount of time, it's just fine. Short trips back and forth to work it's ususally ok. Could it be a bad spark plug or something? Or another sensor?




04' N/A Coupe, auto stick, 50K miles.