Similar problems with the surging and occassional stallin on my 190e. Most likely caused by the Idle control valve or the Over Voltage protection unit. Not sure why the starting thing is happening. Sounds like it may be ECU related though if you can shut it off and then it starts right up.

Any Master Techs out there with any other thoughts????

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89 190E
2.6L
Arctic white
Grey leather
Sunroof
Pirelli P400 rubber
Smoked corners