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Is my Oxygen sensor bad?

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Old 12-09-2009, 05:50 PM   #1
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Default Is my Oxygen sensor bad?

93 H22a civic exhaust smells like fuel

I smogged my car and barely failed a few hydrocarbons over the limit. Then I had someone weld a cat on to my car with an electric welder. They grounded the unit to the exhaust. Next day I drove smoothly to the smog place and smogged it again. #43 (fuel system malfunction or bad O2) engine light came blinking and i failed horribly. CO 7% and hydrocarbons like 300. So I am dumping lots of fuel.

Do you think these symptoms are caused by a bad oxygen sensor? Whats the best way to test the sensor without replacing it?
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Old 12-09-2009, 06:17 PM   #2
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Default Re: Is my Oxygen sensor bad?

bump
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Old 12-09-2009, 06:29 PM   #3
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Default Re: Is my Oxygen sensor bad?

check youtube i believe there is a way to test the sensor because i saw it not too long ago. i think u need some kind of device though to read it.
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Old 12-09-2009, 06:48 PM   #4
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Default Re: Is my Oxygen sensor bad?

OK I'll check it out..thx
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