Running problems W/O having a check engine lamp on this car is rare! BY checking the fuel system computer for codes & LOOKING at the live data from this computer might help with diagnosis.
Mass air sensor is usually the culprit.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)