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Two thoughts.
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Posted by B Millar [Email] (#1109) [Profile/Gallery] (more from B Millar) on Wed, 12 Feb 2014 06:53:24 Share Post by Email
In Reply to: Re: idle noise 03 aero, jhutton, Tue, 11 Feb 2014 17:08:19
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You say the pulleys were done; what about the tensioner? It sits right over the alternator and can make quite a rattling raucous at idle. Sometimes people replace the pulley on the tensioner but not the tensioner.

My other not-so-fortunate thought would be the timing chain. Usually these last to 200-250k miles without making noise, but over time they can stretch and make a rattling sound, particularly when the engine is cold. Oil starvation due to oil sludge can accelerate the problem.

I actually remembered I took a video of my tensioner rattling. Compare notes:

http://www.youtube.com/watch?v=_RAQ_Ozbzto



->Posting last edited on Wed, 12 Feb 2014 06:58:32.

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