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Idler pulley or alternator bearing?

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Old Jan 21, 2026 | 06:44 PM
  #1  
Gak's Avatar
Gak
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Idler pulley or alternator bearing?

Hi everyone, I have a 2008 Mustang GT and I知 hearing a strange noise coming from under the hood. I知 trying to narrow down what it could be. Any help would be appreciated.
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Old Jan 21, 2026 | 07:57 PM
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05stangkc's Avatar
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From: Visalia Ca.
**** Nasty Sound!

I Would Pull Drive Belt and if Noise Goes Away Feel All The Various Drive Items and Check For Roughness. If Noise Persists Less Belt I Would Be Thinking Timing Gear Components.

Also Here is The Latest & Greatest App For Engine Vibration! I Know The App is Great For Drivetrain Issues Not Sure How Well it Works For Narrowing Down Actual Engine Issues! Just an FYI!



KC

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