Odd metallic vibrating sound

Tiny
NEAL LANEY
  • MEMBER
  • 2005 HYUNDAI SONATA
  • 2.3L
  • 4 CYL
  • 2WD
  • 174,000 MILES
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.
Sunday, December 29th, 2019 AT 7:30 AM

14 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Sunday, December 29th, 2019 AT 7:36 AM
Tiny
NEAL LANEY
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  • 9 POSTS
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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Sunday, December 29th, 2019 AT 8:03 AM
Tiny
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
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Sunday, December 29th, 2019 AT 8:05 AM
Tiny
NEAL LANEY
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  • 9 POSTS
What does it look like? And what tools will I need?
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Sunday, December 29th, 2019 AT 8:05 AM
Tiny
NEAL LANEY
  • MEMBER
  • 9 POSTS
This is the cause of the bad exhaust leak.
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Sunday, December 29th, 2019 AT 8:09 AM
Tiny
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
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Sunday, December 29th, 2019 AT 8:23 AM
Tiny
NEAL LANEY
  • MEMBER
  • 9 POSTS
I don't think it's the catalytic converter, all the sound comes from the engine bay.
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Sunday, December 29th, 2019 AT 8:27 AM
Tiny
NEAL LANEY
  • MEMBER
  • 9 POSTS
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?
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Sunday, December 29th, 2019 AT 8:28 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Sunday, December 29th, 2019 AT 8:32 AM
Tiny
NEAL LANEY
  • MEMBER
  • 9 POSTS
Any other ideas as to what that rattle could be?
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Sunday, December 29th, 2019 AT 8:42 AM
Tiny
ASEMASTER6371
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No. I am here and not there. I cannot see it, touch it or hear it first hand.

Roy
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Sunday, December 29th, 2019 AT 8:46 AM
Tiny
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Bummer. Well thanks for all your help Roy! Have a great day.
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Sunday, December 29th, 2019 AT 8:47 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,452 POSTS
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.
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Sunday, December 29th, 2019 AT 9:00 AM
Tiny
NEAL LANEY
  • MEMBER
  • 9 POSTS
Thanks Steve! I'll look it over real close.
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Monday, December 30th, 2019 AT 3:38 AM

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