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Old 12-06-2012, 01:06 PM   #1
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Join Date: Nov 2012
Fan#: 106603
Location: Waxahachie, TX
What I Drive: 2000 Yellow ZX3

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P0420 o2 sensor...

Had a check engine light, replaced the o2 sensor about 400 miles ago, replaced spark plugs and reset it. Came back on, I was thinking maybe catalytic converter?

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