Question about 2001 Pontiac Montana

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Where is o2 sensor stage 1 sensor located...looking for pictures

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Its located in the exhaust manifold between the engine and firewall.

Posted on Mar 27, 2011

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2 Answers

Location of bank 1 sensor 1 o2 sensor 0n a 6 cylinder jeep grand Cherokee laredo


bank one is left side top of engine standing looking at it , O2 sensor is located on exhaust manifold there is one on each manifold (right-left)

Sep 29, 2016 | Jeep Cars & Trucks

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Where are the o2 sensor located on the 99 ford


They are located on the exhaust next to or on the catalytic converter they look lile a small cylinder about 1" wide by 2" leng with 3 wires plug

Aug 10, 2014 | 1999 Ford Explorer

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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.


emissionwiz_236.jpg

Oct 20, 2011 | 1993 Isuzu Rodeo

3 Answers

Were is the bank 2 censor located


Oxygen sensors are always numbered like this:

Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Most GM engines have #1 cylinder located on the left bank, (or Driver's Side) of the engine,

Aug 20, 2011 | 2000 Chevrolet Express Cargo

1 Answer

Where is the location of the o2 sensor in a 2002 chevy impala 3.8l engine?


if you look on the back side of the engine closest to the firewall there will be one in the exhaust manifold. That one will be the bank 1 sensor 1 O2 sensor.

If you look under the car there will be one right after the catalytic converter. That will be the bank 1 sensor 2 O2 sensor

Jul 06, 2011 | 2002 Chevrolet Impala

2 Answers

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

1 Answer

What does the oxygen sensors look like in a 2003 Chevy Venture (warner Brothers Edition) ? How many are there? Where are they located? Can you show a picture of them in place? How do i replace them? Chevy...


There should be an O2 sensor before and after the catalytic converter on your vehicle, so it will have 2 sensors. You'll need a 7/8" open end wrench or an O2 sensor socket to replace them.

It'll look something like this: http://www.carsteering.com/data/all_images/48-01718.jpg

May 20, 2011 | 2003 Chevrolet Venture Passanger

2 Answers

Where is O2 sensor circut bank1 sensor 2. And bank 2 sensor 2


Bank 2, sensor 2 is at the bottom of the engine as you look in from the bumper. It is installed in the exhaust pipe just below the catalytic converter. The bank 1, sensor 2 is at the same location on the back of the engine below the firewall.

See pictures below

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Oct 03, 2010 | 2000 Mercury Sable

3 Answers

Where is the bank 2 sensor 1 located.


Oxygen sensors are always numbered like this:

Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Most GM engines have #1 cylinder located on the left bank, (or Driver's Side) of the engine,

So, the answer to your question would be that you are looking for the sensor located before the catalytic converter on the right (or Passenger Side) of the truck.

Oct 17, 2009 | 1996 Chevrolet K1500

1 Answer

Need to locate o2 sensor, where exactly is it and is it a 2,3, or 4 wire sensor, for a 01 mitsubishi galant


Pretty sure they are a 3 wire for the galant and they are located at various stages in the exhaust pipe. The look like this if you havent seen 1:
http://www.pelicanparts.com/bmw/techarticles/E36-O2_Sensor/pic4.jpg
If this is helpful don't forget to rate me!
Cheers

May 06, 2009 | Mitsubishi Galant Cars & Trucks

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