Hello together. Due to idle problems I am currently finding the causes and first replace the vacuum hoses. I came across a component (possibly solenoid valve) whose function is not known to me.. In the appendix a picture about it… The component sits on the cooler on the top right when you stand in front of the car. A vacuum hose and a plug goes on it. And it always clacks quite often. If you hold your finger on it, you can also feel it. Thanks for your help.