Question about 2000 Chevrolet Prizm

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Where do I locate my upstream O2 Sensor? and how do I replace is?

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Upstream O2 is the one right after the exhaust manifold, the one closes to the engine, disconnect harness, and with 7/8 wrench remove O2.

Posted on Aug 20, 2010

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Code p1133 for a 2005 chevy trailblazer ls/ oxygen sensor where is the sensor located?


On most vehicles, the sensors are screwed in to the exhaust pipes or exhaust manifolds, usually under the car/truck , in the vicinity of "under the front seat" area. They are usually the size of your thumb, and have a wire going to them.

Dec 10, 2015 | Cars & Trucks

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2000 navigator system too lean


Too Lean on which Bank of the Motor?

To have a lean O2 Code --you could have a rich fuel
condition & the pcm drove the fuel trim lean

Next you could have a vacuum leak-in the intake or exhaust system

Third you could have a failed O2 Sensor

Front or Upstream Oxygen Sensors get replaced at 100,000 miles

The front sensors are on the exhaust pipe between the motor &
the converter.

Will need a long handled flex head O2 Sensor Wrench

Mar 17, 2014 | 2000 Lincoln LS

1 Answer

How to replace the O2 sensor in a 2005 PT Cruiser?


your upstream o2 sensor is located behind motor and manifold and need an o2 senor socket and racket plus extension to remove and then your downstream 02 sensor is on the side of Cat convertor (drive side)and same process to remove and replace

Jul 30, 2013 | 2005 Chrysler PT Cruiser

2 Answers

Where is the upstream oxygen sensor located on a 2000 navigator


An upstream O2 sensor is located before the catalytic (CAT) converter; check follow diagram location...


2_10_2012_4_54_42_pm.gif

Fig.: O2 sensor location (zooming link HERE)

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Thank you for using FixYa, have a nice day.

Feb 10, 2012 | Lincoln Navigator Cars & Trucks

1 Answer

How hard is it to replace an upstream o2 sensor on a 99 sephia, and where is it?


YOUR 02 SENSOR UPSTREAM IS LOCATED ....IF YOU LOOK RIGHT BETWEEN THE VALVE COVER AND RADIATOR YOU WILL SEE A EXHAUST SHIELD THE HOLE IN THE MIDDLE WITH THE SENSOR COMING OUT WOULD BE YOUR UPSTREAM 02 GOOD LUCK

Jan 09, 2011 | 1999 Kia Sephia

1 Answer

Universal o2 censor has 2 white 1gray 1black existing wires areblack/tan dkgreen/orng blk/ltbl blk/pink


First what do you mean by a universal o2 sensor? You must make sure that you have the right o2 sensor, most newer vehicles have four o2 sensors 2 upstream and 2 downstream, upstream and downstream are meant to show where the sensors are in relation to the catalatic converter,some o2 sensors have 1 wire or up to 4 wires most with four wires are heated o2 sensors so you need to be sure you ve gotten the right o2 sensor for you vehicle as well as the right replacement for the proper location! My experience is that most after market o2 sensors have the same colored wires as the vehicle. Also most o2 sensors have electrical plugs? If you need help finding the right o2 sensor for your vehicle then please dont be affraid to ask!

Feb 12, 2010 | 1996 Jeep Grand Cherokee

3 Answers

Code po430 not sure what maybe converter


One of three (3) possibitlies:
1. Catalytic Converter is malfunctioning.
2. O2 Sensor is malfunctioning. This will be the O2 Sensor located on the Catalytic Converter. However you should check and/or replace both sensors if needed.
3. You have an Exhaust Leak.
In Order of checking:
A. Check and Repair any Exhaust Leak.
B. Replace the O2 Sensor on the Catalytic Converter 1st. Also Known as the Downstream O2 Sensor or HO2 Sensor.
C. Replace the O2 on the Exhaust Manifold prior to the Catalytic Converter. Also Known as the Upstream O2 Sensor.
D. Replace the Catalytic Converter.
Let me know if this helped, or if you have any additional information, problems or questions. Feel free to contact me at FixYa.com!

Feb 01, 2010 | 1998 Ford Explorer

2 Answers

Exact location of downstream O2 sensor.


Downstream O2 sensor is after (downstream) the catalitic converter on the exhaust pipe. Upstream O2 sensor is after (downstream) the engine exhaust manifold - before (upstream) the catalitic converter. Upstream O2 sensor controls air-to-fuel ratio to yield a small excess oxygen. Downstream O2 sensor assesses the catalitic converter performance.

Sep 22, 2009 | 2003 Pontiac Vibe

1 Answer

Replace oxygen sensors


these engines have 1 upstream o2 sensor and 1 downstream o2 sensor..the 1 in the rear exhaust manifold is the upstream and the 1 after the converter is the downstream..make sure you replaced the right one

May 15, 2009 | 1998 Plymouth Grand Voyager

1 Answer

Upstream O2 sensor location?


That is the first sensor closest to the engine. The downstream sensor is the one behind the converter.
Good luck.
Please rate this response , and let me know if ya need more help!

Aug 15, 2008 | 2002 Pontiac Grand Am

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