Unless you are an ace mechanic, experienced with MB systems, and have all the proper equipment. I would take the car to a indy specializing in MB. When I had problems with my '92 M103, I watched, and listened to the shop owner as he was tuning the engine after replacing the EHA and, forgot the exact name, idle control valve. He went into detail explaining how the various components functioned. It ain't simple. I would never attempt it.


Steve