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ENGINE LIGHT- O2 SENSOR

  • Tiny
  • Tonybum13
  • 2000 Chevrolet S-10
  • 37,000 miles

I have a 2000 chevy s-10 w/ a 4.3L and engine light is on and the code reader said it was an O2 sensor- Bank 1, Sensor 3. Where is this one located? Also I put a new 195* thermostat in it and its running at 210*, and it is full of coolant.

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Sunday, July 8th, 2012 AT 9:41 PM

9 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,853 posts

The thermostat temp rating is just the temp the thermostat opens to allow the coolant to flow. Its not the operating temp the engine is going to run though. Also what is the exact code number you have it will be P _ _ _ _?That will really help.

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Sunday, July 8th, 2012 AT 9:58 PM
  • Tiny
  • rasmataz
  • Member

Heated Oxygen Sensor (HO2S) (Bank 1 Sensor 3) (4.3L VIN X)In exhaust system, after catalytic converter.

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Sunday, July 8th, 2012 AT 11:18 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,853 posts

Thanks for pitching in rasmataz my friend.

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Sunday, July 8th, 2012 AT 11:29 PM
  • Tiny
  • rasmataz
  • Member

No problem amigo-same goes to you with me-

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Monday, July 9th, 2012 AT 1:56 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,853 posts

Not a problem I know we are the dynamic duo lol.

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Monday, July 9th, 2012 AT 5:53 AM
  • Tiny
  • Tonybum13
  • Member

Thank u both very much, I had it read at O'reillys and didn't write code # down, my bad! So it running at 210* won't damage it? It varies between 210-215* It also has a new water pump, heater core, and has been flushed!

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Monday, July 9th, 2012 AT 1:05 PM
  • Tiny
  • rasmataz
  • Member

You'll be okay but when the Temp goes beyound 220 and keep raising be concern-

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Monday, July 9th, 2012 AT 8:28 PM
  • Tiny
  • Tonybum13
  • Member

Ok great, thanks again, much appreciated!

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Monday, July 9th, 2012 AT 9:18 PM
  • Tiny
  • rasmataz
  • Member

You're welcome

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Tuesday, July 10th, 2012 AT 9:37 PM

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