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Humming that intensifies with RPM. Rattling that begins at higher RPM

Tiny
VZIELKE
  • MEMBER
  • 2006 DODGE CHARGER
  • 131,000 MILES
I was driving and hit some debris in the road that rattled around under my car. And instantly there was a humming noise that started that intensifies with acceleration and when I get to about 2 or 3 rpm a rattling noise starts. I was wondering what it may be.
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Thursday, October 24th, 2013 AT 7:23 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check the exhaust system. Something may have come loose or apart. Also, use a rubber mallet and tap on the muffler and catalytic converter to see if there is anything loose as well as check heat shields.
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Thursday, October 24th, 2013 AT 7:29 AM

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