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Cricket Chirping Engine Noise

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Old Feb 2, 2017 | 10:28 AM
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Cricket Chirping Engine Noise

I've got a 2013 C2 coupe 7MT with 25k miles and no mods. This is my daily driver and I don't usually jump on it. However, I just noticed a "cricket chirping" sound coming from behind me when I get revved to over 5000 rpm to the redline. I assume it is coming from the engine but can't swear that it isn't some weird harmonic rattling from loose trim. Anyone else experience this?
 
Old Feb 2, 2017 | 08:47 PM
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Never heard of this- I had a base 2008 997 that never did that, but that was the 3.6 liter engine.
How dirty is your air filter?
Have you had a tech take a look at the air intake?
 
Old Feb 4, 2017 | 10:01 AM
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Have a tech look at your serpentine belt (it's in the back&#128522. They make that Chirping noise when loose or slipping on a pulley.
 



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