o2 sensor replacement, a do it yourself job? - 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 07-20-2005, 11:56 PM   #1
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Default o2 sensor replacement, a do it yourself job?

Where is it located?
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Old 07-21-2005, 12:02 AM   #2
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You have two?

One is right behind the engine, You can get to it from the top.

The other is right behind the cat, It'* from the bottom.

There'* a special socket, Pretty cool too, Like $8 tho.

Make sure you use that thread stuff, When you forget you might as well just weld the sendor in.
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Old 07-21-2005, 12:07 AM   #3
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yes he has two, and the tread stuff is called anti seize. And get that cool O2 sensor socket, it'* awesome.
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Old 07-21-2005, 12:23 AM   #4
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Don't worry about the O2 behind the cat, its just a sniffer...

Replace the one located in the rear manifold...

And yes its a do it yourself job

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Old 07-21-2005, 12:30 AM   #5
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I dont think its ever been changed before.

My car doesnt have problems but should I change it for the hell of it?
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Old 07-21-2005, 12:34 AM   #6
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If your milage is roughly 18-20 in town and 28-32 on the road, Then I'd say you can leave it alone for now...

But on the same note if the car has 50,000-60,000 miles or more than the sensor may be costing you a little milage... We do reccomend replacing the sensor between 50-60K just as
a preventative measure... Usually we will see a complaint about horrible gas milage tho...

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Old 07-21-2005, 12:41 AM   #7
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the Chiltons says that not just any anti seize will work, thats it needs a special kind, surely your average parts guy could help you out, if you would like i can post the information found in the Chiltons manual on here....
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Old 07-21-2005, 01:15 AM   #8
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GM O2 sensors come with anti-sieze already on the threads. The instrusctions specifically say to NOT add any more to the threads.
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Old 07-21-2005, 01:19 AM   #9
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Quote:
Originally Posted by LittleHoov
the Chiltons says that not just any anti seize will work, thats it needs a special kind, surely your average parts guy could help you out, if you would like i can post the information found in the Chiltons manual on here....
Problably the stuff with nickel in it, designed to work with spark plugs. Made to promote electrical connection.
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Old 07-21-2005, 01:38 AM   #10
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yeah it says the anti seize needs to be electrically conductive, it says something about it having glass beads in it...when it heats up whatever else is in it burns off and the glass beads stay...thats obviously not an exact quote...just me trying to remember
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