Smashed Spark in high RPM

Hi to all,

I own Opel Vectra C 2.2L 2008 Petrol Z22SE Engine. I had an issue with unstable RPM when the engine worked in idle mode, so I tried to clean the throttle with "Liqui Moly throttle valve cleaner" (petrol engine). After this process where the car had some difficulty to start again, I drove to the mechanics. During the drive, I tried to run the engine with high RPM and this caused the car to stop running, no breaks (no back pressure) and the engine could start only after 30 seconds...

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