My wife has a 2003 Mazda Protege5 wagon. How can I tell which catalytic converter is going bad (front or back)?

Asked by Mar 09, 2014 at 09:31 PM about the 2003 Mazda Protege5 4 Dr STD Wagon

Question type: Maintenance & Repair

1 Answer

25,315

There's only one Cat and it's bolted directly to the exhaust manifold.

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