Friday, December 16, 2011

How to test for a clogged catalytic converter?

The car is a 1997 Pontiac Grand Am GT (3.1L V6) I suspect that the catalytic converter may be clogged.





Here is what I plan on doing: Taking out the O2 sensor before the converter and then running the engine.





Would that give a concise idea of whats going on?|||pressure test before and after CAT.

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