Need some help / advice for a problem .
Recently got a c30 D4 2011, however I have an issue were the car shudders and stalls when going pasted 1500 rpm but will idle fine .
​​​​​it doesn't come up with any fault codes, or engine warning light . And just seems to happen at random and eventually the problem goes away .
had the EGR valve and fuel pressure sensor replaces and still cutting out and stalling .
All injectors are apparently working fine.
Breakdown fella disconnected the air flow meter and that seem to semi fix the problem while I nursed it too the garage .
Any help or advice would be great as it currently stumping the mechanics as well .
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Check symptoms of dirty/corroded CEM (Central Electrical Module). U-tube has a video on it.