8th Generation Honda Civic Forum - View Single Post - Strange humming sound?
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Old 09-22-2006, 11:51 AM   #2 (permalink)
Kakashi
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Quote:
Originally Posted by chylld
Ok i've got a very annoying sound in my car that's only recently started to develop. Car is an 06 civic sedan.

When driving along, I get this kind of humming/resonance sound happening. With the help of some software i've narrowed the frequency of the sound to 275hz; it's very distinctly a single tone.

Here are the clues:
  • As i drive faster, it gets louder.
  • On rough surfaces, it presents itself more.
  • The pitch does not change, regardless of how fast I'm driving.
  • It still happens when the stereo is turned off.
  • I wound all the windows (inc. sunroof) down/up again and that didn't fix it.
  • The sound is present throughout the tyre pressure range of 35-39psi
  • (possibly unrelated) When i go over harsh bumps, i can hear something loose hitting the underside of the car with a metallic sound.

Any ideas anyone??
+1 for the Hz software rundown. Thats pretty smart, i know what 275 hz sounds like, but i really couldnt tell ya what it could be.

Probably suspension issue, get it checked
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