So today I ran the car and its running fine again. Went for a short ride and it started acting up. got home and just let it idle. (BTW I did try to post a video I cant seem to get it to work). It would shutter and almost stall then smooth out. The engine light came back on and it shows Cyl 1 and Cyl 2 misfire. No CPS P0340 code. I think the misfire codes are due to the poor running condition at the time. I have done nothing more at this time. Later today I will Reconnect my Maxi Check and monitor the MAF sensor I believe it should give a steady reading if working correctly. I checked for vacuum leaks. I found nothing.

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2003 SLK 230 (85000)
1999 E300 Turbo Diesel (388,000)
1991 350SD Turbo Diesel (185,000)