2000 Hyundai Elantra catalytic converter

2000 HYUNDAI ELANTRA
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JRKJRKENNEY
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Engine Performance problem
2000 Hyundai Elantra 4 cyl Front Wheel Drive Automatic

why is the cat getting cherry red? just put new exaust from manifold back and replaced o2 sensors.
Feb 24, 2009 at 3:15 PM
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ZACKMAN
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Badly misfiring, plugged up cat, system too rich computer unable to compensate. Just some example.
Feb 24, 2009 at 10:34 PM