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Catalytic Converter Diagnostics

Posted: Wed Nov 06, 2013 6:52 am
by tobyw
Anyone know if there is a feasible way to determine if you have a failing (partially plugged) catalytic converter WITHOUT pulling it from the system? I have read a few conflicting statements about the ability to test it with an infrared heat gun, looking for a temperature delta at the inlet vs. outlet, but nothing concrete...

Posted: Wed Nov 06, 2013 9:29 am
by Lurch
You can remove the upstream o2 sensor and put a fitting in and attach a pressure guage.