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unindicted co-conspirator
Join Date: Jul 2007
Location: Fresno, CA
Posts: 1,660
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Probably the secondary air injection pump (SAI)
It comes on for a few minutes when cold started
Sounds like a hair dryer
It’s next to the coolant tank
Have someone turn the key while you are in the back and see if it makes the noise from the SAI
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'03 996 - sport exhaust, sport seats, M030 sport suspension, stability control, IMS Solution
‘86 928S3 - barn find project car
Last edited by looneybin; 12-13-2019 at 04:25 PM..
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