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How do i replace the 02 sensor on 1997 chevy blazer

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The question is, which one are you replacing? There is at least three on that vehicle. one in each exhaust pipe from the engine Bank 1 Sensor 1(drivers side) Bank 2 sensor 1(passenger side) and then there is one post cat. Bank 1 Sensor 3. match up the sensor because they are different. some four wire(heated) or single wire. But all have a hex at the base 15/16 wrench should do it. Be careful not to mess up the treads. P'Blaster works good for stubborn ones. Don't forget to add anti-seize to the threads of the new sensor before installing.

Posted on Oct 02, 2010

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6ya6ya
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Posted on Jan 02, 2017

  • 47 Answers

SOURCE: need to replace rear brakes on 1997 chevy blazer

disk or drum?

Posted on Jun 23, 2009

  • 8 Answers

SOURCE: Where is the crankshaft sensor located on a 02

its on the front of the block towards the bottom should only be one bolt holding it in not difficult just not much room to play with

Posted on Oct 05, 2009

  • 225 Answers

SOURCE: how to replace a radiator on a 2002 chevy blazer?

radiator needs no special tools wrenches and ratchet i would replace all hoses connecting to the radiator and thermostat would be a good idea to ensure no overheating

Posted on Nov 03, 2009

Molson02536
  • 3854 Answers

SOURCE: Where is the location of the map sensor on an 02

Map sensor located on the intake manifold (4.3 vortec) on the passenger side between the ignition coil and throttle body.

Thank you for using Fixya and good luck

Posted on Mar 19, 2010

jturcotte
  • 7726 Answers

SOURCE: how many oxygen sensor on a 02 chevy blazer

Hi, there are 4 sensors on your truck--two upstream and 2 downstream. The upstream sensors are mounted in the exhaust manifolds and the downstream sensors are mounted just behind the catalytic converters. The upstream and downstream sensors are different. Bank 1 is on the driver's side and bank 2 is on the passenger's side. Please let me know if you have more questions, and thanks for using FixYa.

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Posted on Jan 01, 2011

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