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Posted
well my worst fears were confirmed (and you were all wrong). The rattle under my car is a loose catalytic converter rattling around in the muffler. madgo_ron.gif

 

holy toledo, a catalytic converter rattling around inside the muffler? that is one f'd up vehicle. do you drive a klein bottle around town?

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Posted

to be really geeky, the catalytic converter is separate from the muffler. Now it may be all busted up and pieces making their way back into the muffler, but normally the converter and muffler are several feet apart.

Posted

you're right - it wasn't inside the muffler but inside the thingy attached to the muffler. The funny thing is that it didn't even occur to Joe Mechanic until I mentioned the words "catalytic converter" so I'm still not 100% convinced. I haven't done the repair yet as they referred me to "My Daddy's" to save some $.

Posted

You say you're still not sure. If the noise sounds like small pebbles (or even ping pong balls) rolling around in a metal can, similar to a musical instrument called a "rainstick", then it's definitely a catalytic converter failure. And your vehicle is 10 years old - it's overdue, given average driving.

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