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Is it the higher pitch whirling noise?
Pulley? Did you here it while running without the serpentine belt?
If you are talking about a clacking/tapping noise.
Get a can of seafoam and put it in your oil and see it it quiets down.
you might have a lifter that is sticking.
One of my boxsters did this and it no longer makes any ticking/tapping noise. Although
I have not been driving it much since the oil change after the seafoam.
Mike
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2015 Panamera Hybrid, 2008 Cayenne Twin Turbo
2001 996 GT2
1999 Spec Boxster, 1996 993 Cabriolet
1992 964 Cabirolet, 1975 911 RSR Replica Race Car
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