Question about Lincoln Navigator

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Where is the upstream oxygen sensor located on a 2000 navigator

Where are the 2 upstream O2 sensors located and are they hard to get to when being replaced ?

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  • Lincoln Master
  • 17,970 Answers

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


where is the upstream oxygen sensor located on a 2 - 2_10_2012_4_54_42_pm.gif

Fig.: O2 sensor location (zooming link HERE)

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Posted on Feb 10, 2012

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  • Lincoln Master
  • 5,332 Answers

They are in the exhaust manifolds. If you look from under the vehicle you will see them. They will be before the catalytic converter.

It is unusual for both of them to be bad. Is there a problem or symptom that leads you to believe they are bad?

Posted on Feb 10, 2012

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Posted on Jan 02, 2017

  • 169 Answers

SOURCE: 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!

Posted on Aug 31, 2008

blueextc3221
  • 15935 Answers

SOURCE: o2 sensor location

DTC P0156 indicates the output voltage of the downstream Heated Oxygen Sensor (HO2S) is less than some calibratable functional window. The possible causes are:

  1. Pinched, shorted and/or corroded wiring and pins.
  2. Crossed sensor wires
  3. Exhaust leaks.
  4. Contaminated HO2S.
  5. Bad HO2S.
Since you didnt specify the engine size in your vehicle - please see the diagram below for the location of the sensor(s)

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Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Posted on Apr 16, 2009

motor1258
  • 6674 Answers

SOURCE: 1997 Dodge Stratus V6 oxygen sensor location

Upstream, as in ahead of the converter, back toward engine. Start at converter and work your way back, should be on exhaust pipe or even on manifold.

Posted on Jan 11, 2009

BPALepine
  • 61 Answers

SOURCE: location of oxygen sensor

There is only 4 sensors on a 2000 dodge intrepid and the bank 2 sensor 2 is the sensor located on the right (passenger) side and the one located after the catalytic converter (the one close to the firewall).

Posted on Apr 22, 2009

bschilz
  • 2049 Answers

SOURCE: location of the bank 1 sensor 2 O2 sensor on a 2001 ford escape

B1 means the sensor is located on the same bank of the engine that has the #1 cylinder. B2 is located on the opposite bank.
S1 means the sensor is located BEFORE the catalytic converter
S2 means the sensor is located AFTER the catalytic converter

You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks

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Posted on Oct 20, 2009

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Got Honda accord 2000 code po135 replaced 02 sensor and stil show same code



How to Diagnose a P0135 -Heater
Performance Bank 1 Sensor 1 (GM 3.5L)
January 31, 2012 Updated: October 29, 2014 Written by: Abraham Torres-Arredondo Article Id: 371

image_1.gifIf your check engine light is on and you have a diagnostic trouble code P0135 stored in the PCM's memory... then you've come to the right place to test and troubleshoot the upstream oxygen sensor.
A P0135 DTC says: HO2S Heater Performance Bank 1 Sensor 1... and this means that the PCM (Powertrain Control Module = Fuel Injection Computer) has detected a problem with the front oxygen sensor's heater element or a problem in the heater's circuit (wires).
In this tutorial, I'll show you how to check the oxygen (O2) sensor's heater element and the two circuits that feed it with power (10 to 12 Volts) and ground with a multimeter.
In case you're wondering, where the oxygen (O2) sensor that the code P0135 is accusing of being BAD is... this bad boy is located on the exhaust manifold and before the catalytic converter.
To help you navigate this article, here are its main points:
  1. Symptoms of a BAD Oxygen Sensor Heater Element.
  2. What Tools Do I Need to Test Code P0135?
  3. What Does the Heater Inside the Oxygen Sensor Do?
  4. Circuit Descriptions of the Downstream Oxygen Sensor.
  5. Start Here.
  6. TEST 1: Oxygen Sensor Bank 1 Sensor 1 Test.
  7. TEST 2: Checking 12 Volts to O2 Heater.
  8. TEST 3: Checking the O2 Heater's Ground Circuit.
  9. TEST 4: Ohming the O2 Heater Element.
  10. P0135 O2 Sensor Heater Test Summary.
Buying a Digital Multimeter for Automotive Diagnostic Testing (found at: easyautodiagnostics.com).
  • Scan Tool.
    1. Don't have one?... check out my recommendation: Abe's Scan Tool Recommendation.
  • Wire Piercing Probe.
    1. Although this tool is not an absolute must, if you do buy one, you'll realize just how easy it makes testing the voltages inside the wires.
    2. If you need to see what this tool looks like, you can see it here:Wire Piercing Probe.
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  • Applies To:
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    Buick Vehicles:
    • Rainier 4.2L
      • 2004, 2005
    Chevrolet Vehicles:
    • Colorado 3.5L
      • 2004, 2005
    • Trailblazer
      • 2004, 2005
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    How To Test for a Blown Head Gasket (GM 3.5L, 4.2L)
    How to Test the MAF Sensor and Codes: P0100, P0101, P0102, P0103
    How To Test for a Blown Head Gasket (GM 3.5L -FWD)
    All Articles: 3.5L "A day without sunshine is like, you know, night"
    Steve Martin
    MORE TUTORIALS:
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    Feb 03, 2015 | 2000 Honda Accord

    1 Answer

    Where are o2 sensors location


    One would need the year, make, model, and engine size to tell you exactly where they are and how many.

    O2 sensors are always in the exhaust stream, either in the exhaust manifold that is attached to the engine, or in the exhaust piping after the exhaust manifold. Some models have one for each bank of the engine, and some have only one sensor to monitor oxygen content. These engine sensors that the computer uses to "fix" or adjust the air/fuel ratio are called the upstream oxygen sensors. If the car is equipped (as most are today) with an oxygen sensor after the catalytic converter, this is called a downstream oxygen sensor. They are the same and do the same thing, but the downstream sensor is only used to monitor the efficiency of the converter. The upstream sensor(s) are what the computer reads to adjust or "trim" the fuel delivery.

    So some older cars have only one o2 sensor. Not far from the engine in the exhaust stream. Some newer cars with dual exhaust (2 converters) may have four o2 sensors. 1 for each bank of the engine and 1 behind each catalytic converter. A 2005 Buick Century with a 3.1L engine, for instance, has only two o2 sensors: one (upstream) in the exhaust down pipe, and one (downstream) just behind the catalytic converter.

    Aug 16, 2014 | Cars & Trucks

    2 Answers

    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

    What is the best way to remove O2 sensor bank 1 sensor 2?


    Here is the low-down on oxygen sensors, and their location designations explained:

    Oxygen sensors are screwed into the exhaust system at various points. Some people say that there are 4 oxygen sensors, but technically, that is not correct. Only the front 2 are considered oxygen sensors.

    These oxygen sensors are screwed into the exhaust pipe or directly into the exhaust manifold, one on each bank. Because they are in front of the catalytic converter, this is often referred to as 'upstream'.

    The other 2 are actually called catalyst monitors. They are oxygen sensors, but they serve a different purpose. They monitor the activities of the catalytic converters, thus the name, catalyst monitors. They are screwed into the exhaust one on each bank, after, or downstream, of the catalytic converters.

    On a 4 cyl engine, there are only a total of two such sensors, the one in front of the catalytic converter is the O2 sensor, the one behind the cat is the catalyst monitor.

    The location names for them are as follows:
    • On a 4 cyl, the front / upstream is called "bank 1 sensor 1" and the rear / downstream sensor is called "bank 1, sensor 2."

    • On a V6 or V8 engine:

      • the passenger side bank on a forward facing engine, or the bank closest to the firewall on a transverse mounted engine, is bank number 1, so the forward / upstream sensor on that bank would be "bank 1, sensor 1."

      • The driver's side bank (forward facing mount engine), or front bank (transverse engine) would be bank number 2, thus the forward / upstream sensor on that bank would be "bank 2, sensor 1," and the rearmost / downstream sensor on that bank would be "bank 2, sensor 2."

    Jul 28, 2012 | 2004 Mitsubishi Endeavor

    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


    printer.png View & Print Options 80_fm96hmob2_006a-159za.png&width=490&height=209&displaytype=display&imgrotation=&links=
    Cylinder #1 on left side.

    printer.png View & Print Options 29_fm96hmob2_006a-159z.png&width=469&height=193&displaytype=display&imgrotation=&links=
    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 the bank 1 sensor 1 o2 sensor located in a 2006 hyundai sontata gls v6?


    The bank has to do with which side of the engine. The 'Sensor 1' indicates that it is upstream of the catalytic converter.

    Heated Oxygen Sensor Removal & Installation Heated Oxygen Sensor (Front) (2.4L) hyundai-04-24-5822.gif

    Heated Oxygen Sensor (Rear) (2.4L) hyundai-04-24-5823.gif

    Heated Oxygen Sensor (Bank 1/Sensor 1) (3.3L) kia-04-00-5213.gif

    Heated Oxygen Sensor (Bank 1/Sensor 2) (3.3L) kia-04-00-5214.gif

    Heated Oxygen Sensor (Bank 2/Sensor 1) (3.3L) kia-04-00-5215.gif

    Heated Oxygen Sensor (Bank 2/Sensor 2) (3.3L) hyundai-04-33-5855.gif

    prev.gif next.gif

    Jan 13, 2011 | 2006 Hyundai Sonata

    1 Answer

    I would like to know where the oxigen sensors are located and how many does my 2003 lincoln navigator has?


    the oxygen sensors are located in the exhaust pipe. There will be at least three and possible four. The upstream sensors are always located before the catalytic converter and usually close to where the exhaust pipe bolts to the exhaust manifold. The job of these two sensors is to monitor the difference in oxygen values between the outside air and the exhaust to help determine proper air fuel ratios.

    If you have a single catalytic converter than there will be one O2 sensor (downstream) located after the catalytic converter. If there are two cats than there could be two O2 sensors behind each cat. The job of these two sensors is to monitor the catalytic converters efficiency.

    Oct 25, 2010 | 2003 Lincoln Navigator

    1 Answer

    Where is the upstream oxygen sensor located


    upstream oxygen sensor or bank 1 as its called is the closest to the exhaust manifold. now for the question back there are usually 4 o2 sensors on a car bank(front)1 sensor 1, bank 1 sensor 2 and (rear) bank 2 sensor 1, bank 2 sensor 2

    Sep 03, 2010 | 1999 Chevrolet Malibu

    1 Answer

    Where is the oxygen sensor located?


    WHICH ENGINE YOU GOT?... V6 OR 4 CYLINDER?
    On the V6 there are four (4) oxygen sensors (O2 Snsr), and on the 4 cylinder there are two (2) O2 Snsrs. The Upstream O2 sensors are in the exhaust manifolds at the top, and the downstream O2 sensors are at the bottom of it or in the exhaust pipe.

    Oct 06, 2009 | 2003 Hyundai Tiburon

    2 Answers

    How many oxygen sensors in a 2001 chrysler sebring 3.0


    17c3292.jpg

    Fig. Heated Oxygen (HO2S) location (sensor 1)-2.4L engine

    db6f426.jpg

    Fig. Heated Oxygen (HO2S) location (sensor 2)-2.4L engine

    99e413c.jpg

    Fig. Heated Oxygen (HO2S) location (bank 1, sensor 2) (bank 2, sensor 2)-2.7L engine

    e2a250f.jpg

    Fig. Heated Oxygen (HO2S) location (bank 2, sensor 1)-2.7L engine

    I hope help you with this (rated this help). Good luck.

    Sep 09, 2009 | 2001 Chrysler Sebring

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