Odd metallic vibrating sound

2005 HYUNDAI SONATA
174,000 MILES • 2.3L • 4 CYL • 2WD
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NEAL LANEY
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At certain RPM the car makes a strange metallic ringing sound, like something is loose and vibrating quickly. Any idea what it could be? The steel mesh on my exhaust is completely gone I think from hitting a ramp a bit too hard.
Dec 29, 2019 at 7:30 AM
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ASEMASTER6371
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Good morning,

Can you upload a video of the noise so I can hear it?

The converter shield is a common reason for the noise but need to be sure it is not something else.

Roy
Dec 29, 2019 at 7:36 AM
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NEAL LANEY
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I hope you can hear it well from the video. i had to feather the accelerator to make it make the sound, it happens more when everything is warmed up.
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Dec 29, 2019 at 8:03 AM
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ASEMASTER6371
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Sounds like you have a bad exhaust leak. Yes, I heard it and it sounds like the converter shield.

Look under the car at the converter and see if the shield is there and secure.

Roy
Dec 29, 2019 at 8:05 AM
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NEAL LANEY
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What does it look like? And what tools will i need?
Dec 29, 2019 at 8:05 AM
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NEAL LANEY
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This is the cause of the bad exhaust leak.
Image (Click to enlarge)
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Dec 29, 2019 at 8:09 AM
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ASEMASTER6371
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It sure is. The flange broke holding the 2 pipes together.

You can buy just the flange and join them back together.

As far as the converter, I will need to see some more pictures on that part.

Roy
Dec 29, 2019 at 8:23 AM
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NEAL LANEY
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I don't think it's the catalytic converter, all the sound comes from the engine bay.
Dec 29, 2019 at 8:27 AM
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NEAL LANEY
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Could you maybe send me a link to the flange so i can order one? Will i have to take the exhaust off to fix that?
Dec 29, 2019 at 8:28 AM
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ASEMASTER6371
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You need to go to a parts store and give them your information on the car and they will get you the correct flange.

No, you can do it on your car.

Roy
Dec 29, 2019 at 8:32 AM
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NEAL LANEY
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Any other ideas as to what that rattle could be?
Dec 29, 2019 at 8:42 AM
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ASEMASTER6371
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No. I am here and not there. I cannot see it, touch it or hear it first hand.

Roy
Dec 29, 2019 at 8:46 AM
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NEAL LANEY
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Bummer. Well thanks for all your help Roy! Have a great day.
Dec 29, 2019 at 8:47 AM
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STEVE W.
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Take a close look around the exhaust manifold and down pipes for loose shields. After you fix the pipe. It could easily be that loose pipe is letting something on the exhaust vibrate because it isn't being secured with the pipe apart.
Dec 29, 2019 at 9:00 AM
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NEAL LANEY
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Thanks Steve! I'll look it over real close.
Dec 30, 2019 at 3:38 AM