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Discussion Starter · #1 ·
Getting a grinding noise for a second when I start her up. Coming from the alternator area. Any ideas on what it could be would be great. She’s a 2012 wrx And the colder it is the louder it is
 

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Is it every start or only cold? There isn't much there to grind unless you are maybe hearing a idler pulley rattle.

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I get the same noise but I've only had it for 10 years or so and I've not worried too much yet. LMK what you find.
 

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Discussion Starter · #7 ·
If you are comfortable working on the car you can pull the belt and check the tensioners or the alternator bearing.

I can't imagine anything in that area to grind. How many miles?

Edit it doesn’t sound like that and I tested the alternator so now I’m thinking starter or like you said the tensioner

Does it sound like this

https://m.youtube.com/watch?v=yrh4Yi6YOSk

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Could be turbo shield, I know i've had some random noises attributed to that which could resemble grinding. I mean sometimes noises in the engine bay sound in different places. Also could just be general Subaru noises after starting.
 
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