How can I tell which catalytic converter on my 1996 Buick Roadmaster is bad?

Asked by Jul 26, 2013 at 11:03 AM about the 1996 Buick Roadmaster 4 Dr Limited Sedan

Question type: Maintenance & Repair

I know one of them is bad. I replaced one about 4 yrs ago but cant remember which one. I
dont want to purchase the wrong part. Any help is appreciated! Thanks!

2 Answers

209,955

http://www.onlineautorepair.net/1/post/2011/07/testing-a-catalytic-converter-at-home.html

5 out of 5 people think this is helpful.
19,625

replace them both- "The high price of being cool"

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