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What is this sound?

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  #1  
Old 10-19-2019, 12:41 PM
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Default What is this sound?
I have gotten rid of my exhaust leaks but I still have this high pitched rattling noise that occurs at the front of the engine - especially when accelerating. Thoughts?

 
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Old 10-19-2019, 01:00 PM
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Take the belt off and see if you still hear it.
 
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Old 10-19-2019, 01:39 PM
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Originally Posted by Extinct
Take the belt off and see if you still hear it.
Noise is gone. So what does this tell me? Belt and tensioner are new.
 
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Old 10-19-2019, 02:07 PM
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Perhaps the harmonic balancer? Do those go bad and have a high pitched rattle?
 
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Old 10-19-2019, 03:18 PM
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Bearing is my bet with the belt off try wobble /move all the pulley's side to side I think you will find a loose one
 
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Old 10-20-2019, 04:36 AM
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Yep, check the idler, that is the next most common bearing to go out. Alternator bearing, compressor bearing, ps pump are less common but a possibility.
 
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Old 10-20-2019, 05:51 PM
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Was so close to replacing this pulley but I ended up with the wrong part. Waiting....

Removing the old idler

Bearing is rattling and looks shot.
 
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