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Rattling noises

Tiny
BIGDREW08
  • MEMBER
  • 1998 DODGE RAM
Whenever I start up my truck, there is a rattling sound. It also makes that same sound when I apply the gas. I have heard it might be the heat shield, around the catalytic converter, might be loose. So do you have ideas or recommendations on what is making this annoying rattling sound.
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Monday, September 6th, 2010 AT 7:11 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
You are on the right path. This is most likely an exhaust issue. It could be a heat shield or even the converter coming apart so we need to test this a couple ways.

https://www.2carpros.com/articles/rattle-noise

First the easiest is to take a rubber hammer and tap the exhaust all the way up and down to try and find anything loose.

Next we need to test the converter. Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

I suspect this is a converter issue so I attached the process below from the manual on how to replace the converter. Please let us know if you have questions on this. Thanks
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Thursday, July 15th, 2021 AT 8:18 AM

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