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Old 04-02-2010, 04:29 PM   #3
eightsandaces
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Join Date: Feb 2009
Location: Buffalo NY
Posts: 828
Does the AOS have any moving parts? It sounds like a momentary squeak, sounds like a spot on a rotating wheel, intermittent and subject to low rpm. I checked the water pump seemed great, the noise is definitely on the LR closer to the intake so I'm thinking PS pump noise. I will check again tomorrow with all the covers off. I checked the pentosin and at first it looked low, but the cold low level barely touches the stem.

thanks

Last edited by eightsandaces; 04-02-2010 at 04:31 PM.
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