Question about 2002 Buick LeSabre

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Where is the o2 sensor located on 2002 buick lesabre?

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Posted on Jan 02, 2017

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SOURCE: how to replace a 2002 buick rendezvous o2 sensor

The O2 sersor will require a special socket to avoid damaging the wiring on the new unit. (the old one really doesn't matter so any socket that works can be used on it)
The first thing to do is spray a thread release agent like PB Blaster® around the threads. You should do it for several days between driving.
Call the auto parts stores to find one that has loaner tools. They will require a deposit until the socket is returned. It will look something like the picture. Yes you will need a socket wrench too.
Some more information to consider from a forum

"You might want to take the O2 sensor you just replaced back and get two new ones. Some times new O2 sensors are defective, also when replaceing them I found it better to replace all of them at the same time for sometimes when replaceing only one the computer sometimes sends back false codes. Another thing is if you buy an after market O2 sensor the wires are just a little bit longer and can cause the computer to send back false codes. The best O2 sensors that I have found are the Boch Platinums designed for your vehicle."

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Posted on Mar 09, 2009

  • 54 Answers

SOURCE: O2 sensors on 2002 buick rendezvous

hi im wes the o2 sensor is always in the exaust newer buicks have one before the converter (sometimes in the exaust manifold) one after the converter if it has duall exaust it could have four
left bank sensor one is before the converter on drivers side bank two sensor 2 would be passanger side after the converter does this help?

Posted on Mar 12, 2009

  • 599 Answers

SOURCE: Crankshaft Position Sensor

the dual crankshaft position sensor is secured in an aluminum mounting bracket and bolted to the left side of the timing chain cover, partially behind the crankshaft balancer, hope this helps get back to me if you need mre help. please rate my fix as i strive to be the best

Posted on Apr 29, 2009

  • 87 Answers

SOURCE: where is the fuel tank pressure sensor located


Posted on Aug 06, 2009

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SOURCE: where is the fuse box location 1989 buick lesabre

Hi J_livezey,
Your fuse box is located behind the right side of the dash,to the right of the glove box.Here is a diagram to better expalin.If you need anything else,let me know. Thanks,Chuck.1da4d0d.gif

Posted on Mar 10, 2010

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1 Answer

How Many Oxygen Sensors On A 2002 Buick Lesabre?

oxygen sensors ( O2S) are located after the cat converter/s
heated oxygen sensors (HO2S) are located in the exhaust manifold/s before the cat converters
so on a 4cyl/in line 6 cyl engine --1 of each
on a v6/v8 --2 of each

Apr 01, 2017 | 2002 Buick LeSabre

1 Answer

Where are the 02 sensors on a 2002 Buick Lesabre 3.8L?

The O2 sensors are in the exhaust. Your have up stream and down stream. The upstream is right behind the engine in the down pipe back by the firewall. The downstream sensor is under the car back by the catalytic converter.

Apr 21, 2013 | Cars & Trucks

1 Answer

Need to replace the rear O2 sensor in a 2002 buick lesabre

Remove the erg valve and shake it if there is no sounds then you either need to clean it with Carb Cleaner or buy a new one!

Sep 28, 2012 | 2002 Buick LeSabre

1 Answer

Whereis o2 sensor windstar 2000 ford

Depending on which engine your Windstar is equipped with, there are either three or four O2 sensors. They are all located in the exhaust system.

If you do not know which O2 sensor you are looking for, the article at the following link may be helpful.

Which Oxygen Sensor Is It?

Jan 25, 2012 | 1993 Buick LeSabre

3 Answers

Where is the O2 sensor located

For 2000 Buick Lesabre 3.8L SFI OHV 6cyl the Oxygen Sensor is located: under hood, center, rear engine area, above exhaust pipe flange, mounted in exhaust manifold.


Fig. HO2S1 location "2" on 3.8L


Fig. HO2S2 location "4" on 3.8L

Hope this helps (remember to rate and comment this answer).

Jun 07, 2011 | 2000 Buick LeSabre

1 Answer

How to change oxygen sensors in 92 buick lesabre

The O2 sensors are located on the exhaust system piping. Either on the manifolds or on the pipes themselves. You will need the vehicle cool, then disconnect the electrical connectors. Do them one at a time. You will need either a special O2 sensor socket or a 17 - 22 mm wrench to remove them. Unscrew them from the pipe and rescrew the new one back in. Then reattach the connectors. Then you can start the car.

Sep 26, 2009 | 1992 Buick LeSabre

1 Answer

2002 buick century cooling fan sensor

I am Welsea Zhang in China
In China, we always meet a problem from Buick car,the problem of fan sensor wire always burned while run 4-50000km, does America meet the same problem?
Waiting for your kind reply
my email is
Many thanks and best regards

Jun 29, 2009 | 2002 Buick LeSabre

1 Answer

2002 Buick LeSabre ECM DTC codes

P14xx and P15xx Diagnostic Trouble Codes?????????? You say has no DTC'S ???? What ?????

006 O2 Sensor Signal Analysis
What are the fuel trims at ? add fuel ,taking it away . Are the O2 sensors switching ?
What does scan data show the mass air flow sensor doing ?
010 Mass Air Flow Signal Analysis

006 Fuel Pump Current Testing Fuel pressure is AOK ??? fuel flow ?

035 Emission Tests Lean Fuel Condition

002 Fuel System Tests Start Here
DTC P1404
DTC P1441
DTC P1635
DTC P1639
DTC P1640
DTC P1650
DTC P1660
DTC P1670

Jul 24, 2017 | 2002 Buick Rendezvous

1 Answer

Replacing O2 Sensor What color are the original: Wires

black is usually power and if there is a blue its the feedback to the pcm

May 13, 2009 | 2004 Buick LeSabre

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