Hello, I'm the owner of an E200, 2000, 85kw Mercedes Benz. I clean the egr past days and after I set up all the parts again I noticed that the engine have other sound and it doesn't sounds like it use to be. Today I noticed that the part 0005450427 that I identify as Vacuum pressure converter is making a noise, a buzzing noise, when in idle and even when I'm accelerating the car. I feel like the engine doesn't have the same power as it used to.. anyone having this problem with Vacuum pressure converter, Thanks.