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Cylinder deactivation problem

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Poland
#1
Hi, I'm having a problem with my MK8 ST. I'll try to describe it so that you understand:
When driving on 2-cyl mode (one cylinder deactivated), and pressing the pedal more (or even switching to the sport mode), the engine is struggling to get the 3rd cylinder to work. It should immediately turn the 3rd one on, but it doesn't. It still runs only on 2 cylinders for some time (I can hear that). It needs about 2-5 minutes, or a restart to run 3cyl again. I've already replaced cylinder deactivation solenoid, but it still didn't resolve my problem. Here's a video about what i'm talking about (sorry, it's in polish language, but I know you'll know what I mean, haha)

View: https://youtu.be/wTkvEKFstx8?si=zQqHbe7W2AbaRqGw


Anybody knows what is going on?
 


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