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Old 09-27-2009, 01:55 PM   #1
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Weird Whirling Noise at Cold Start

I am experiencing a Weird Whirling Noise at Cold Engine Start. The sound will goes away when restart the car during the day. Is this the secondary Air Pump? Thanks in advance.
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Old 09-27-2009, 02:07 PM   #2
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Probably, but an audio clip would help people opine properly.
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Old 09-27-2009, 02:50 PM   #3
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Oh yes, i do have an audio clip. Please click on this link: audio clip
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Old 09-27-2009, 03:56 PM   #4
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Eew. Nope, not secondary air injection.

I vote starter motor pinion gear:
Boxster start up noise
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Old 09-27-2009, 04:58 PM   #5
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Yup, sounds like the starter. Mine sounded like someone stepping on a cat before I replaced it. No cat noise now.
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Old 09-28-2009, 12:51 AM   #6
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Thanks for ur replies. If it is the starter, how come it only sounds like that when the engine is cold and no noise when the engine warmed up.
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