Only 1 o2 sensor on a 95? - 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 07-14-2003, 03:24 AM   #1
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Default Only 1 o2 sensor on a 95?

When I was under the car chaning the transmission fluid i looked for the second O2 sensor after the cat. But there was none. Is it somewhere else? The 94 has 2 too. So it couldnt be a left over.

When i was under the car i noticed my body was stamped 1994. Musta been one of the first 1995'* off the line. Or its just some arbritrary 1994.
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Old 07-14-2003, 11:33 AM   #2
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I swear to god i could have read 2 on Willwren'* history page on bonevilles.
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Old 07-14-2003, 11:52 AM   #3
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Straight from Bills site

SE and SSE

Quote:
Exhaust on the SE included an exhaust manifold, a single exhuast with a catalytic converter, and single inlet with single outlet on the muffler coming out the passenger side. There were 2 heated O2 sensors, and no resonator. This model used an electronic EGR valve. The SSE used the same exhaust as the SE, with the exception of the dual muffler outlets coming out on either side of the rear of the car, and also had an electronic EGR valve
SSEi

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Exhaust on the SSEi included an exhaust manifold (no headers), and a single exhuast with a catalytic converter, and muffler with a single inlet with dual outlets coming out on either side of the rear of the car. There were two heated O2 sensors, and a resonator. The SSEi used an electronic EGR valve
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Old 07-14-2003, 11:52 AM   #4
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Oh...and that applies to the 1995 model year
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Old 07-14-2003, 12:55 PM   #5
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Now you're confusing ME!

Did someone find another error? That'* been awhile......
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Old 07-14-2003, 04:57 PM   #6
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I could swear there was only 1...hmm i'll have to go crawling. But later cause its raining.
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Old 07-14-2003, 05:03 PM   #7
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There is only 1. I have changed mine out before. I was at the dealer and went over the scematicts with the parts guy and only 1 showed up, at the top of the down pipe. Every other connection was accounted for. So if someone has 2 on a 95 SSEi, they truely have a unique car...lol
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Old 07-14-2003, 05:26 PM   #8
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Only 1 on my '95 LSS...most manufacturers went to 2 in '96, when OBDII was required.
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Old 07-15-2003, 01:25 AM   #9
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Well there ya have it Will....ya gotta go back to the history!
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Old 07-15-2003, 06:12 AM   #10
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Thank god. I can put off updating that timeline at least one more day......
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