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What is This Noise on Startup?

  

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https://youtube.com/shorts/H_Q3Vpmpjko

https://youtube.com/shorts/P7NZ5uo-ano

Noise usually happens on a cold start, but sometimes warm. The sound varies. The first video is it just a rattle and the second it screeches a bit. Both the idler pulley and tensioner pulley were replaced.

 

2005 Nissan Altima 217,000mi Auto No Codes


1 Answer
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Briefly remove the fan belt and see if the noise persists.


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