Is it like a loud screech or shreek? Or is it a high-pitched whine like a motor spinning, and continues anywhere from a few seconds to a few minutes? If it's that instantaneous screech then go gschotland's route. If it's the continuous whine then you're referring to what Paul mentioned, and that's normal on some startups with the car.
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-O/D
1997 Arctic Silver Boxster, 5-spd
IMSR + RMS
Robbins glass window top
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