Air pump.... - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Air pump....
Posted by David Ingram (more from David Ingram) on Wed, 2 Nov 2005 13:32:34
In Reply to: New whining noise at startup, Nick-Prov, Tue, 1 Nov 2005 15:19:49
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As you discovered, this sound is connected to your air pump, whose purpose is to add air to the exhaust so as to raise its temperature -- like blowing on a fire -- to get the catalyst and 02 sensors up to their operating temperatures quickly.
Before you plan to bypass this, know that some states inspect the car for its presence and proper operation. If you bypass it you might end up having to address it at your next emissions test. Just something to keep in mind.
Having said that, just because it's making noise doesn't NECESSARILY mean it's getting ready to quit on you. Presumably if it does you could just soldier on without? Or maybe Ebay could provide you with a cheap replacement.
posted by 155.212.49...
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