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High pitch whistle sound when let gas go

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Old 01-17-2018, 05:10 PM
  #1
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Default High pitch whistle sound when let gas go

hi guys,

mine is a 2007 A6 basic, no turbo.

sound comes from front somewhere under the hood, this only happens when the car is totally warmed up, first 5 miles driving only. the sound disappears after about 5 miles driving, almost unnoticeable sound when fully stopped. no difference if I put in neutral or in drive.

sounds like a bearing/pulley of some sort, I replaced idler pulley and belt tensioner, no luck.

please help.

Last edited by stephenxchen; 01-18-2018 at 06:30 AM.
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Old 01-19-2018, 09:02 PM
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anyone? help!
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Old 01-20-2018, 02:31 AM
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What engine do you have?
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Old 01-20-2018, 08:07 AM
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Kevin,

2007 C6 3.2L 4F engine
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