Q: replaced one catalytic converter and now the second one is making loud noise. on 2005 Ford Crown Victoria

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
only has 64,000 orig. miles
Is it still under warrenty
(2) Answers
(2) Comments
Your car is equipped with two coverters on each side (4 total) was tthe 'one' that was replaced done at the dealer or did an aftermarket shop cut and weld in a single converter to one of these assemblies? if that was done , it may void any warranty (at least on the affected side).Good luck.
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