2003 Pontiac Aztek What can it be?

2003 PONTIAC AZTEK
120,345 MILES • 6 CYL • FWD • AUTOMATIC
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DHUDLUN
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When I start my engine it hisses and as I go thru out the day it does not stop. I spraye WD 40 on it, but it will only stop it temporarily. What can it be. I checked the belt and it is not frayed or cracked as far as I can see. It only does the noise loud when I accelerate. What do you think it could be.
Oct 27, 2009 at 6:54 AM
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CRZYDRVR
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Check all the clamps on the air intake system.
Dec 8, 2009 at 2:59 AM