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Weird Fluttering Noise?


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Today i was driving with the radio off and I heard a weird fluttering noise coming from the engine/firewall area. It only does it during deceleration or braking from about 30 mph to about 5 mph. As the car slows so does the fluttering. It isn't very loud but now that i know it's there i can't stop hearing it. I've only had the car for 2 months now and i never noticed it before. I tried turning the a/c off and that didn't change anything. Everything else on the car is in tip top working order. Any info would help a lot. --geoff--

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  • 1 month later...

I think I have the same problem. I thought it sounded like it was coming from the center consol area though. When I am driving from 15 to 25 mph, I hear a sound that at first sounded to me like a tape rattling or a can of coke rattling in the center cup holder. I cleaned everything out and I can still hear it.

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I think I have the same problem.  I thought it sounded like it was coming from the center consol area though.  When I am driving from 15 to 25 mph, I hear a sound that at first sounded to me like a tape rattling or a can of coke rattling in the center cup holder.  I cleaned everything out and I can still hear it.

Check out the sheet metal heat shields around the exhaust resonator. On my SC400 they are just below the seats. Sometimes these get rotated out of position and rattle. The rattle is definitely RPM dependent and sometimes not heard unless the windows are down and the car is not moving.

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