C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

O2 question

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Old Mar 1, 2010 | 10:29 PM
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From: vero beach florida
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My left O2 shows 100 - 200 on Datamaster and I getting a lean O2 error msg, is this a sign of a bad O2 or a exhaust leak?

Car is a 93 w/headers and Bosch 13190 heated O2's n one last thing, does the ECM use both O2's to set A/F mixture or just one and if 1, then which one?
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Old Mar 1, 2010 | 11:12 PM
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Originally Posted by surfer92
My left O2 shows 100 - 200 on ?
Is that the Mv reading?
If so it is not working , should constantly swing through whole range >900Mv
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Old Mar 3, 2010 | 02:11 PM
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But it would stay low, if there was a exhaust leak?
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Old Mar 18, 2010 | 12:19 PM
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How old is sensor? If old I would just replace it. When I had header flange to EXT leak it still swung or swinged. whatever.
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