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Scoped my catalytic converter. Is this normal?

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Old 06-06-2020, 10:02 PM
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Default Scoped my catalytic converter. Is this normal?

Was trying to diagnose a perceived lack of passing power on the highway. Considered the potential for a clogged cat.

Ran a scope in through the upstream O2 hole. Seems mostly clear, but it does appear cracked in one spot. Is this normal or should I probably consider changing it?










Thanks!

2003 Ram 1500 Quad Cab 4x4 5.7l
 
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Old 06-07-2020, 08:52 AM
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Do a pressure test. Just drill a small hole in the exhaust before the cat, stick your gauge in there, and see what pressure is at idle. If it's over 2PSI, replace the cat.
 
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Old 06-13-2020, 09:07 PM
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Not sure... mine "fell off" and was replaced by a little cheater chip that varies the voltage just enough for the downstream O2 sensor not to though an engine code.
 



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