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Old 03-28-2007, 05:59 PM   #10
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Join Date: Jul 2006
Location: Where the Sewer Meets the Sea, CA. USA
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Also keep in mind that if you are hearing a Fan like noise coming from the engine compartment during first 3 minutes of morning startups. That could be your Secondary Air Injection Vacum pump running.

And if its really loud and sounds unbalanced and you can see that the fan on the passenger side vent (behind passenger door) isnt spinning, then likely your Vacum pump is on its way out...
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