O2 Sensor replacement - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-04-2003, 03:25 PM   #1
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Default O2 Sensor replacement

Is it just my imagination or do I have better throttle response and acceleration after replacing my front O2 sensor? I thought this was simply a mileage issue.
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Old 06-04-2003, 03:40 PM   #2
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It corrects the air/fuel mixture... so yeah you get better response.
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Old 06-04-2003, 11:31 PM   #3
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It was my impression that the "fine-tuning" of the air/fuel by the O2 sensor did not matter on full-throttle accelerations. I thought the ECM cut-out (back to open loop momentarily).
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