Do I have a bad Cat or muffler? -
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Go Back > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Do I have a bad Cat or muffler?

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Unread 10-05-2009, 06:19 AM   #1
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Join Date: Oct 2009
Location: New Mexico
Posts: 7
Do I have a bad Cat or muffler?

How do I know if it's my cat or muffler thats going bad, and how can I test them? What are some symptoms? or I'm thinking that maybe it could be a bad intake problem but that should be easy enough to test for. The zj idles fine and drives tell you get it to a certain point then dies.

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