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Will a wore out cat. Converter make a roaring noise on deceleration

Tiny
ETHAN9
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • 208,000 MILES
Cat. Converter rattles when reved up in neutral and let accelerator off. Truck making noise when decelerating between 35-15. U-joints and carrier bearing just replaced. Wheel bearings and breaks appear to be fine
Friday, October 14th, 2011 AT 2:33 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
The insides sound like they came apart in the cat. I would suggest replacing it before it causes other problems. As far as the noise, it could make noise, but I don't know about a roaring noise. Do you only hear it when you decelerate?
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Friday, October 14th, 2011 AT 2:38 AM

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