small squeak at start

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small squeak at start

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06-03-2015, 06:22 PM

#10

EJ-Fresno

Registered User

Join Date: Oct 2014

Location: Santa Rosa, CA

Posts: 520

Garage

Quote:

Originally Posted by kk2002s

The Secondary air pump(SAP) runs at cold start for about 1-1/2 - 2 minutes (Sounds like small vacuum)
If your high pitch sound is during that and goes away when pump stops, indications are bearings in SAP are dry (They can be re-greased)

Obviously if the sound is not associated with SAP then check previous posters suggested components

I think I have the same issue, a kind of whistle for a few seconds at start-up...
Is it difficult to re-grease those bearings?
Thanks!

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2003 2.7 Boxster - Tiptronic - Carrera wheels - OBC - Red calipers - Cat pipes - Modified muffler - Rear speakers - K&N - Litronics
2006 V6 Mustang
2008 ML 350

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