O2 AF Sensors

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se7en
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Joined: Tue Jan 05, 2010 10:37 pm
Location: Vancouver BC

O2 AF Sensors

Postby se7en » Mon Jul 16, 2018 10:32 pm

Hello just changed the engine on my 2009 pathfinder. But I think I might have to change the sensors. Actually I am pretty sure I have to change them.

Could any of you give me a bit of guidance as to what to order?
I think the 2 front ones are O2 sensors and the rear are AF sensors - but really I have no clue... Help please.

Here's a good looking cheap downstream one but is this really it?
https://www.amazon.com/ECCPP-Downstream ... dpSrc=srch


you know here's all 4 of them for only $120...
https://www.amazon.com/Germban-Downstre ... g=UTF8&me=
What do you think?


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disallow
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Location: Winnipeg, Canada

Postby disallow » Wed Jul 18, 2018 9:31 pm

I would suggest getting the NTK ones from Rockauto.

They are the same as the OEM, will fit 100% correctly, and read everything properly. $116 each on Rockauto.

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smj999smj
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Location: Prospect, VA

Postby smj999smj » Thu Jul 19, 2018 4:19 am

The fronts are air fuel ratio sensors and the rears are oxygen sensors and it is unlikely that all four are bad. Only the front sensors actually affect drivability; the rears are stictly monitoring sensors. NTK or Denso sensors would be the only ones I'd use.


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