Pontiac Firebird 1967-2002 Birds of a feather flock together

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Old Jun 1, 2005 | 03:16 PM
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Long time reader, first time posting. I have a 94 Firebird and have recently started noticing that my catalytic cover is making loud noises. I can see that the cat looks damaged, but when I hold it in place it stops rumbling. I think my best bet would be to replace the cat, but would it be easier to replace the entire exaust? I don't know what is entailed in removing the cat, which is why I ask. Thanks in advance.
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Old Jun 2, 2005 | 12:30 AM
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An exhaust shop should be able to replace it. You could buy another y-pipe with the cats in it used but on a car that old, the y-pipe will likely be a real pain to get off.
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Old Jun 3, 2005 | 02:42 PM
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I would buy a replacement cat with the right enter-exit diameter for $100 from Jegs or Summit or anyplace that is realisic price wise and a muffler shop should charge no more than $40 to cut and weld the new one in place. Make sure they weld the flange the cat-back bolts to so you won't be pissed off later.
Good luck!
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Old Jun 4, 2005 | 09:40 PM
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If you can tap the cat and hear the ceramic guts moving around, then that's an indicator that it's bad.
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Old Jun 5, 2005 | 10:55 PM
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You guys rock! Here's a cold one
I'm going to buy the cat and have a shop install it. Will keep you posted.
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