Question about 1999 Pontiac Sunfire

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Picture of o2 sensor - 1999 Pontiac Sunfire

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Here's a guide on how to replace.Here's what it looks like.

Posted on Dec 12, 2012

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99 lexus GS-400 P420, where is the O2 sensor? Need Pics not words


Below is a picture of the location of both O2 sensors for your vehicle. Also the last picture is your evap. system. In the "dotted lined" area I would check for rotten or lose hoses in that area as well the vapor pressure sensor could be faulty as well. Hope this helps.

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Apr 05, 2012 | 2000 Lexus LS 400

2 Answers

Where do i find all my oxygen sensors on my april 1993 isuzu rodeo?


The O2 sensors are located in the exhaust pipe just off the exhaust manifold. Here is a picture of your particular O2 sensor, some are slightly different looking it depends on the manufacturer. You will need to get under the truck to replace the sensor it takes a special 7/8" O2 sensor socket, about $5 from Autozone.


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Oct 20, 2011 | 1993 Isuzu Rodeo

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I have research around and found that the Bank 1 sensor 3 O2 sensor is post Cat. But when I got under there I dont see anything that could resemble a sensor. Where is it. Please help. Marc


try this
ALLDATA Editor's Note: Always verify #1 cylinder location prior to diagnosis and repair.

- Cylinder bank number one is the bank that contains number one cylinder.


See: Firing Order


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Cylinder #1 on left side.

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Cylinder #1 on right side.

- The first oxygen sensor in cylinder bank # 1 is numbered O2 Sensor 1/1.
- The second oxygen sensor in cylinder bank # 1 is numbered O2 Sensor 1/2.
- A third oxygen sensor in cylinder bank # 1 would be numbered O2 Sensor 1/3.
- The first oxygen sensor in cylinder bank # 2 is numbered O2 Sensor 2/1.
- The second oxygen sensor in cylinder bank # 2 is numbered O2 Sensor 1/1.



- If a V-6 or V-8 vehicle only uses one downstream Heated Oxygen Sensor (HO2S) it is numbered O2 Sensor 1/2, even if it uses two upstream HO2S.
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Jun 03, 2011 | 2001 Dodge Stratus

2 Answers

Where is 2003 avalon o2 sensor(bank1-sensor1),(front upstream) ? can I install it myself without a lift?


The bank one sensor one O2 is located in the exhaust pipe before the Catalytic Converter, bank one is the cylinder bank that also contains the number one engine cylinder, in your car that would be the cylinder bank at the rear closest to the firewall (see diagram below). You will need to raise the car and crawl under it to replace the sensor and you will need a special O2 sensor socket. Remember always use safety stands to support the car when under the car for any repairs.
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May 31, 2011 | 2003 Toyota Avalon

2 Answers

O2 sensor type and location for 3.8 liter engine


there are 4 o2 sensors the 2 up towards the engine are called the upstream and the 2 after the converters are called the downstream . heres a picture to help you understand there locations. hope this helpsonetufshoppe_121.gif

Feb 12, 2011 | 1998 Ford Windstar

1 Answer

Picture of bank1 sensor1 o2 sensor location on 2001 chrysler town & country


I do not have a diagram but, bank 1 is the bank where #1 cylinder is at. other side would be bank #2. so bank #1 o2 sensor is just before convertor.

Aug 29, 2010 | 2001 Chrysler Town & Country

2 Answers

Picture of where the o2 sensor is located on a 2000 pontiac sunfire


there are more than one, give me the trouble code and I can tell you which one to replace.

Sep 18, 2009 | 2000 Pontiac Sunfire

2 Answers

Can't find the o2 sensor behind the catalytic converter


if its a 1993 there wont be one behind the cat

Nov 20, 2008 | 1993 Saturn SL2

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