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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 12-11-2002, 03:16 AM   #1
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Default oxygen sensor replacement

Hey all,

Quick question: how hard is it to replace an oxygen sensor on a '95 Bonneville SE Is it accessible without going under the car?

Thanks in advance,
Sasha
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Old 12-13-2002, 01:14 PM   #2
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Default O2 sensor

I would like to replace my 02 sensor,where do i find it on 1997 series 2?
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Old 12-13-2002, 02:56 PM   #3
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One hint, run engine for a couple minutes to get pipe hot, then sensor comes out easier, you DO NOT want to break it. New sensor will come with anti-sieze on threads.
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Old 12-13-2002, 04:17 PM   #4
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Don't burn yourself on the exhaust manifold!
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Old 12-13-2002, 06:23 PM   #5
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Pffft...burns smurns. Cuts are what hurt, when taking the spark plug wire boots off to change the plugs. Ack! I get so cut up and still have not learned what gloves are for.
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Old 12-14-2002, 12:30 AM   #6
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Or plug wire pliers....
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Old 12-15-2002, 04:32 PM   #7
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the o2 for my 92 cost me about $10 i think.


in sharp contrast, they want close to $100 for a 91 civic.
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Old 12-16-2002, 02:14 PM   #8
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Most O2'* for Bonnevilles should run 30 to 40. I personally reccommend ONLY AC Delco sensors. They're cheaper through www.gmpartsdirect.com if you're not in a hurry. I believe the 97 should have 2, one in the downpipe, and one after the cat. A crescent wrench works great.
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Old 12-16-2002, 04:06 PM   #9
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The O2 sensors are 55.86 apiece, through gmpartsdirect.com

At least, they are for my 2000. I don't know if the same P/N'* apply for the '97, but here they are (you can thank DeathRat for these #'*):

The part numbers are as follows:
Pos 1 (In exh man) 25312203 & pos 3 (after cat) 25312207
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Old 12-19-2002, 03:05 PM   #10
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Thanks for the help guys.
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