o2 sensor location on ka24e

[NissanSupraGTR]

just as the title says - done pretty much everything for a major tune up, about to do catback and want to know where the o2 sensor is so i can replace it. I've seen some wierd bolt/plug type thing on the intake manifold with a wire coming out of it - is that it? Heard it was somewhere near the cat but not sure. If anyone has pics it'd be a godsend. thx

[NissanSupraGTR]

No one can tell my where the o2 sensor(s) is/are?

[lbrowne]

The only one you have is on the exhaust manifold.

[NissanSupraGTR]

any idea how easy it is to replace?

[gumby74]

You're....kidding right?

On the off chance you are being serious, it is not much harder than changing a spark plug.Simply disconnect the sensors plug, wrap a wrench (19mm?) around the body, and remove. Install is reverse of removal. Remember not to over tighten the new sensor.

[NissanSupraGTR]

no , i was serious didn know if you had to remove the manifold or somethin crazy like that, and i read (on autozone of all places) that you should apply some kind of sealant to the new sensor...

[vancouverbc]

no , i was serious didn know if you had to remove the manifold or somethin crazy like that, and i read (on autozone of all places) that you should apply some kind of sealant to the new sensor...

not sure about sealant but it is good idea to put some anti seize stuff on the threads. its a crayon .

[funigui]

not sure about sealant but it is good idea to put some anti seize stuff on the threads. its a crayon .

new sensors now usually come with anti-seize on them. Start the car for like 30 seconds before you try and crack it, life will be much eiaser. Also if it wont crack put a drop of brake fluid right on the threads next to the manifold.

[gumby74]

Yes on both counts. Recently replaced my sensor with a new Bosch unit, and it came pre-anti siezed.If it has not been removed in a while, some brake fluid, PB Blaster, WD 40 or what ever lube you prefer, would be a great idea. Again, do not over tighten the replacement.

[adrianfromthecastle]

no , i was serious didn know if you had to remove the manifold or somethin crazy like that

you don't have to remove anything to get to the o2 sensor. If anything, the only thing you have to remove is the heat shield, which is easy, just find the screws that hold it in, unscrew them, and remove the shield. The o2 sensor should be located on the exhaust manifold (hot side of engine) and it looks like a spark plug.

make sure to do this when your engine is cold btw...