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Old 05-29-2014, 05:52 AM   #2
kk2002s
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Join Date: Sep 2012
Location: S. New Jersey
Posts: 1,239
Garage
If it's at start up and goes away after a couple minutes - Secondary Air Pump
If it happens after engine is real warm then it could be the Engine compartment fan that helps circulate air
These both are fan like sounds

If its constant then I +1 on a drive component off of the belt
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