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Weird noise

 
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Old 06-19-2010, 05:48 PM
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Weird noise

i was driving my car one day and noticed a noise, almost like a rattle. it only makes the noise when it hits about 2250 rpm in every gear, including neutral. my first thought was a heatshield, i took my prelude to the muffler shop and removed all the heatshields on the exhaust. (stock exhaust by the way) but the noise was still there. any ideas on where to look next? your input would be much appreciated, thanks
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Old 06-20-2010, 11:28 AM
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Re: Weird noise

Explain this noise, is it like a loudish vibrating noise?
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Old 06-20-2010, 11:58 AM
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Re: Weird noise

Something is vibrating against something else. Chances are, you didn't remove ALL the heatshields. It might also be your catalytic converter coming apart internally.
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Old 06-20-2010, 12:11 PM
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Re: Weird noise

If the cat is coming apart internally you'll know it because if you shut your door, it'll rattle. It will also rattle during very low rpm. Easiest way to tell is to jack up the front of the car, grab the cat, and shake it. You'll hear where the rattle is coming from.
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Old 06-20-2010, 12:18 PM
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Re: Weird noise

Also if you have a cai or sri it could be vibrating against something in your engine bay, thats what my noise was.
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