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Cls 350cdi loses boost

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Old Mar 18, 2026 | 06:54 PM
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Cls 350cdi grand edition
Cls 350cdi loses boost

Hello everyone, im experiencing a massive problem which is playing with my head from weeks. My car loses boost from 1k to 2k rpm and after that runs fine. Changed the turbo actuator . Pcv valve , map sensor . Egr and still the same. Did all this parts change because car was going into limp mode and came as faulty actuator and egr. Was fine for couple of weeks and now its back again. I dont know if that actuator is playing games again or not. Im attaching a live values where i saw the air mass is low and intake air temperature is high. Also attaching a video how boost drops on live data.I will appreciate if anyone can help. Thanks

https://youtube.com/shorts/zo2LQAkR1Bk?si=FOzeIk4AedFPqPD-

Air mass ( 629-669) mine is 449mg/hub
exhaust gas recirculating positioner <20hpa mine is 5hpa
intake air temperature (0-80c) mine is 128C

Attached Thumbnails Cls 350cdi loses boost-img_9711.jpeg  

Last edited by Didaka6466; Mar 18, 2026 at 06:55 PM.
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