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How to change oxygen sensor in a 2003 blazer - Computers & Internet

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6ya6ya
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Posted on Jan 02, 2017

  • 75 Answers

SOURCE: need to find and replace oxygen sensor for 2003 chevy ventue

Need a 7/8 open end wrench or a o2 sensor socket. Located in exhaust pipe. The one closest to the engine is Bank 1 Sensor 1. The ones located downstream and known as "Sensor 2"

Posted on Jan 06, 2010

gordanddar
  • 477 Answers

SOURCE: replace oxygen sensor in 2003 Mazda six

It is just threaded into the exhaust manifold , or pipe close to the engine. You just unplug the wire , and thread it out. They can sometimes be quite hard to get out. If your car is a V6 , it might have one on each side.

Posted on Apr 08, 2010

  • 1206 Answers

SOURCE: The check engine light is always on. This has been

well there are a few but a good scanner can tell you which one is the problem some vehicles have as much as four and they are expensive so it is important you change the right one.most auto parts stores like auto zone or advance auto parts will scan your car for free.

Posted on Nov 14, 2010

c1apton15
  • 3400 Answers

SOURCE: Ihave a 2003 Jaguar S-Type, What do PO133, PO153

You might check this site out for Jag codes. Oxygen sensors can be a sticky job, they're screwed into exhaust and can literally weld themselves in place. Plus in most cases you need special wrench/socket to get around the sensor. (they can be a real pain)

http://www.obd-codes.com/

Posted on Jan 04, 2011

ZJLimited
  • 17970 Answers

SOURCE: Location of oxygen sensor on 2004 blazer check

Removal & Installation

Raise and support the vehicle.
Support rear of the powertrain frame.
Remove four rear frame bolts.
Lower the frame no more than 73.2 mm (3 inches).
Disconnect the rear oxygen sensor electrical connector.
Remove the rear oxygen sensor from the rear exhaust manifold.

To install:

Install the rear oxygen sensor in the rear exhaust manifold. Tighten the rear heated oxygen sensor (HO2S) sensor to 41 Nm (30 ft. lbs.).
Connect the rear oxygen sensor connector.
Raise the frame.
Install the four rear frame bolts. Tighten the frame bolts to 100 Nm (74 ft. lbs.).
Lower the vehicle.


Heated Oxygen Sensor Bank 1 Sensor 1 (HO2S 1/1)

WARNING: Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the exhaust inlet end free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.

CAUTION: Remove oxygen sensors with the engine temperature above 48C (120F). Otherwise the oxygen sensors may be difficult to remove.

A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.

11_14_2011_1_39_03_pm.jpg

Fig. Showing the location of the HO2S Bank 1 Sensor 1

Heated Oxygen Sensor Bank 1 Sensor 2 (HO2S 1/2)

CAUTION
Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the exhaust inlet end free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.

CAUTION: Remove oxygen sensors with the engine temperature above 48C (120F). Otherwise the oxygen sensors may be difficult to remove.

WARNING: A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.

11_14_2011_1_40_07_pm.jpg

Fig. Showing the location of the HO2S Bank 1 Sensor 2

Raise and support the vehicle.
Remove the heat shield.
Disconnect the heated oxygen sensor electrical connector.
Remove the heated oxygen sensor.

To install:

Install the heated oxygen sensor. Tighten the heated oxygen sensor (HO2S) to 41 Nm (30 ft. lbs.).
Connect the heated oxygen sensor electrical connector. CAUTION
Ensure connectors are securely installed beneath harness heat shield to prevent damage.
Install the heat shield.
Lower the vehicle.


Heated Oxygen Sensor Bank 2 Sensor 1 (HO2S 2/1)

CAUTION: Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the exhaust inlet end free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.

CAUTION: Remove oxygen sensors with the engine temperature above 48C (120F). Otherwise the oxygen sensors may be difficult to remove.

WARNING: A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.

Raise and support the vehicle.
Remove the air deflector.
Disconnect the front oxygen sensor electrical connector.
Remove the front oxygen sensor from the front exhaust manifold.

11_14_2011_1_37_39_pm.jpg

Fig. Showing the location of the HO2S Bank 2 Sensor 1

To install:
Install the front oxygen sensor in the front exhaust manifold. Tighten the front HO2S sensor to 41 Nm (30 ft. lbs.).
Connect the front oxygen sensor electrical connector.
Install the air deflector.
Lower the vehicle.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Posted on Nov 14, 2011

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2003 Chevy S10 Blazer 4.3 V6 with a po154 code for oxygen sensor can someone tell me which sensor it is


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Read more at: https://www.obd-codes.com/p0154
Copyright OBD-Codes.com

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Ihave a 2003 Jaguar S-Type, What do PO133, PO153 and P1000 codes mean? Afriend said oxygen sensors; how to change the oxygen sensor for a 2003 Jaguar S-Type?


You might check this site out for Jag codes. Oxygen sensors can be a sticky job, they're screwed into exhaust and can literally weld themselves in place. Plus in most cases you need special wrench/socket to get around the sensor. (they can be a real pain)

http://www.obd-codes.com/

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There does not appear to be anything wrong but the light came on we took it to Auto Zone to get a reading and the code isCatalist effiency- low-banl 1


Hi:
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PO131 and PO 151


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P0151=O2 Sensor Circuit Low Voltage Bank 2 Sensor 1
Marc,
this shows that the oxygen sensor on the left exhaust pipe before converter is bad,
And the front oxygen sensor on the right exhaust infront of converter is bad.

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Why my 2002 blazer might stall but idels good


Could be throttle position sensor, a air mixture sensor or an oxygen sensor. If oxygen sensor then replace all of them or you will strain the others and then you will have to keep changing out the oldest on like a cat chasing its tail. smile.

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