W204 C200K RPM drop and jerk.
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Joined: Sep 2011
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2008 C200K (W204)
W204 C200K RPM drop and jerk.
Hello,
My C200K has been driving me nuts. The car has around 43800 Km. It has been recently serviced in the dealer. Chassis number is WDD2040411F054615, which I have already decoded here: Vin Check. I have had two independent mechanics try to pinpoint the cause to no avail.
The issue is that, when light on the throttle and at around 20 km/h, the rpm drop and I can feel the car jerk enough to be uncomfortable, now imagine this happening 100 times on slow stop and go traffic. This happens regardless of gear, as I can hold 1st gear in manual mode and it still does it, so it's not the transmission shifting. When I go full throttle, it doesn't happen or it's barely noticeable. There are no visible transmission leaks, or any leaks for that matter. The car is equipped with the 5 speed transmission I believe to be the 722.6. There are no error codes or lights anywhere, stored or current. It does it in all transmission modes (c, s and m).
Here is a video of the occurrence:
I hope you guys can point me in the right direction, thanks.
The issue is that, when light on the throttle and at around 20 km/h, the rpm drop and I can feel the car jerk enough to be uncomfortable, now imagine this happening 100 times on slow stop and go traffic. This happens regardless of gear, as I can hold 1st gear in manual mode and it still does it, so it's not the transmission shifting. When I go full throttle, it doesn't happen or it's barely noticeable. There are no visible transmission leaks, or any leaks for that matter. The car is equipped with the 5 speed transmission I believe to be the 722.6. There are no error codes or lights anywhere, stored or current. It does it in all transmission modes (c, s and m).
Here is a video of the occurrence:
I hope you guys can point me in the right direction, thanks.
Member
Joined: Jul 2014
Posts: 246
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From: Canberra, Australia
W204 MY10 C200CGI
Potentially a split in the breather tube under the compressor. Although if it is that you will get a cel on the dash soon enough and as it gets worse, full limp mode. Could be some time before those symptoms show themselves
