Hi,

I have a 1987 300E, completed tuned up and replaced two fuel pumps last months because the car has been neglected excepting adding water and oil. The car starts fine however when the speed is gradually increased 20-25 mph the car would hesitate then pick up the speed, the engine rpm would increase from 2000 rpm to 3000 rpm then drop down to 2000 rpm, after that it seems fine without any problems. When returning home, I have to drive up a slightly steep hill, the car would, sometimes, behaviors the same and hiccup 3-4 times when I press the accelerator along the climb. Do I have the similar problems, as posted this thread #16215 and I should check vacuum leaks and adjusting the fuel mixture and EHA?

Approximately how much would it be costing me if I let a mechanic, specializing in Mercedes but not from dealers, to do the work? Certainly I hope my problems have nothing to do with the transmission.

DL