Hi all,

My 2010 W212 E250 CGI has an intermittent issue. Maybe once a week, before the engine reaches the working temperature,
when I stop in traffic after a few hundred meter drive, then engine shakes for 10 seconds or so or until I press the accelerator.

This happens only while the engine is still cold. Took it to Mercedes a couple of times, but it never happened while the car was
with them. Last time, ironically, it happened to me at the first traffic light as I was driving the car away from service centre.

Also worth mentioning:

1. Noticed that revs drop pretty quickly after I start the car. It takes about 20 seconds to drop from over 1000 rpm to about 650 rpm.

2. Worth mentioning that the engine sometimes takes 2 minutes to reach working temperature and sometimes it takes 14 minutes.


Any ideas, please?

Thanks

Milo

 

have you filled up the tank since? Just trying to rule out a gas related issue. How does coolant look? Any codes popping up?