I will try that first. What is the logic on cleaning it vs replacing the ICV. I'll read more about it. I know I've taken it off and checked it over the years. I do not recall replacing it ever, so it's original. My rubber elbow has been replaced, I will check for tears.

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2003 X5 3.0i Silver (build 07/03)
2006 X5 3.0i Blue
1977 Ferrari 308 GTB
1994 Ferrari 348TS Speciale #14/15
1989 Ferrari Testarossa