02 sensors to get

[Tliska10]

Well I was hoping it was a ghost code but it came again,

All my 02 sensors are original
158k


What brand should I get I want to get all 4 and I want the plug and play ones.

Code was p0155.

 

[jeep-N-montero]

Denso

 

[plh]

quadruple down on Denso

 

[Tliska10]

Where to purchase them at?

And anyone know the parts numbers for all 4?

 

[coffeegoat]

What year? I'm guessing Gen 3 by the picture.

Here's the ones I got for my 2001, if you have the 3.8 they may be different:

https://www.amazon.com/gp/product/B000C5UFWQ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B000C5SGEU/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B000C5SGCM/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B000C5YD0Q/ref=oh_aui_detailpage_o00_s02?ie=UTF8&psc=1

Every once in a while Denso (or NGK) shows up for stupid cheap, like $10. Not sure why, but when you need parts now, prime shipping for the win.

 

[ajm291]

I did an engine and exhaust refresh (heads off engine block) over a year ago on my 2006 and went with denso to replace all 4 O2 sensors. I ordered the O2 sensors from rockauto. They have been trouble free (over 16,000 miles) since the install.

 

[Tliska10]

2003 Montero Limited.


Ok I found them all on Rock Auto for about 240 shipped..


I'll check Amazon also

 

[jeep-N-montero]

Most logical way to order them is to type the part number into ebay and amazon and see which is cheapest via the sort function, but make sure you order real Denso sensors, not the version made in Indonesia that do not have "Denso" etched in the sensor.

 

[plh]

you may need to add non-foulers as well, probably not recommended in Cali thou.

 

[jeep-N-montero]

you may need to add non-foulers as well, probably not recommended in Cali thou.

May need to explain to him what those are, but why do you think he may need them?

 

[Tliska10]

Isn't a non-fouler just a extension of the 02 sensor?

Kinda like if your catless and want it to think you have cats on the car?

 

[plh]

https://www.expeditionportal.com/forum/threads/gen-3-cats-downpipes.160630/page-2#post-2157787

 

[Tliska10]

Ok that what I figured.


Ok so bank 2 sensor 1 is upstream left as I'm looking looking at the engine from the front I take it? Since they only say
upstream left
upstream right
downstream left
downstream right



Since that's the code I'm getting, might just replace that one first only for niw

 

[plh]

Bank 1 is the same side of the engine as #1 cylinder.

 

[Tliska10]

So that would be left side