how many o2 sensors are on a 95 bonneville se? - 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 01-27-2005, 02:29 AM   #1
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Default how many o2 sensors are on a 95 bonneville se?

how many o2 sensors are on a 95 boneville se?
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Old 01-27-2005, 03:29 AM   #2
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I think one in the rear manifold.
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Old 01-27-2005, 07:41 AM   #3
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Yes...one by the #4 spark plug at the firewall.....
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Old 01-27-2005, 09:13 PM   #4
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yep, just one in the middle of the rear manifold, 95 was the last year before they put one after the cat on the obd2 cars
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Old 01-28-2005, 12:08 AM   #5
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Interesting. I just had the 02 sensor replaced about 2 weeks ago. My check ses light came on a couple of days ago and the dealer told me it was the 02 sensor. When I told them they had just replaced it, he stated "your car has two 02 sensors". I have a 92 se. Do I have two 02 sensors?
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Old 01-28-2005, 12:27 AM   #6
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You mean an 02, not a 92, right?

A 92 has 1. An 02 has 2. One will trigger a SES code, the other will trigger only emissions.
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Old 01-28-2005, 12:30 AM   #7
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They didn't go to the 2 sensor system until about 96 I believe....Your dealer is smokin' tha ganja
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Old 01-28-2005, 12:31 AM   #8
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96 is correct, sir.
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Old 01-29-2005, 12:01 AM   #9
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Default call me in the morning and tell me i'm the only one!

I have a 92 se. The dealer just told me he replaced the second O2 sensor. They replaced the first one 3 weeks ago.... go figure... i just wish they would call me in the morning and tell me I'm the only one
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Old 01-29-2005, 02:54 AM   #10
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Update your sig, and make sure we know which car

If they were talking about replacing the same sensor TWICE, ask them why. If they changed BOTH, ask them "HOW?"
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