hey there...

i have searched but never really found the answer...anyone of u have changed their O2 sensor before...on an nx2000...i think mine might be bad due to low mileage probs...even after changing the plugs...didn't check ECU codes though...

anyways anyone done this? and how much does an 02 sensor cost? do i need anything extra?

thanks in advance...;)

according to courtesy nissan, they're like 100 bucks or something, but thats bullshit because I paid like 94 canadian from my local dealer which is about 60 us. You will need a special socket to pull the sensor out of the exhaust manifold, but other than that it's pretty straightforward. Other things to check for bad mileage are TPS voltage, MAF grounding, cleaning the throttle body, cleaniing the EGR system. If your car takes too long to warm up, try replacing the thermostat, that may cause your mileage to drop.

I got mine for ~$60 at Advance Auto, and it's the same that Nissan sells. I took it off with an offset wrench, but it is a PITA to ge to. I thought it was easier from underneath the car.

I think I got mine from from www.nissanparts.cc/ for about $55 (It should be a Bosh brand ). I wanted to confirm the price for you but i can't seem to remember the part # to check on the site:( .

You should get an O2 sensor socket and a 1/2 inch rachet to make it easy on you. you'll be working with a tight space, but its not too bad. I removed the bolts on the radiator and pushed it up a few inches to give me some more clearance.
Good luck,
Nick

i checked the link u gave me and used the part number of se-r.net and it came up with the price of $105...guess thats for the oem one...would buying it from thepartsbin.com be okie? they have a bosch one for the nx2000 for $50...and i think they have free shipping too...i don't need any nut or anything right?

Originally posted by sbd18
i checked the link u gave me and used the part number of se-r.net and it came up with the price of $105...guess thats for the oem one...would buying it from thepartsbin.com be okie? they have a bosch one for the nx2000 for $50...and i think they have free shipping too...i don't need any nut or anything right?

Dude sorry about misguiding you with the previous post, www.thepartsbin.com was indeed where i got my sensor from and not the link I gave you earlier. when i bought mine they had free shipping for items over $60?? I believe so i added some sparkplugs. and I was very satisfied with their shipping time. you will not need anything with that sensor. just go to your local auto store and buy an O2 sensor socket.

BTW, the OEM one and the one selling for $50 are exactly the same except maybe for the packaging. (The stupid dealers just make a 100% markup on them thats all)

O2 sensor is very easy to change. Make sure you disconnect the adapter harness before you start unscrewing the sensor.If you don't you may snap a wire. around $60 is a decent price.

Brent

i found that a 6 or 8 " cresant wrench works well and a little lite tapping form a hammer knocks the O2 loose quite well. i think i payed $75 cnd for mine at lordco auto parts, and that was the 300zx one.

Try Kragen. I bought mine there. Forgot how much though.

here's how I changed mine.

when you install it.....make sure you remove the negative battery wire from the battery (for fear of shorting something out).

Bought O2 sensor, antiseize and P-Blaster (Kinda like WD-40 but I believe to be more powerful). Rented O2 sensor Tools from Autozone for $15 deposit.

The tools will come with the regular socket looking wrench with a slit on the side and 2 other adapters for removing the O2 sensor - total of three tools in there.

Without removing the radiator or the heat shield, I used one the black adapters instead of the silver wrench adapter (becos of space limitation).

Look at the website and you'll understand what I'm talking about:
www.autozone.com/servlet/UiBroker?ForwardPage=/az/in_our_stores/loan_a_tool/exhaust/oxygen_sensor_wrench_set.jsp (http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/in_our_stores/loan_a_tool/exhaust/oxygen_sensor_wrench_set.jsp)

Undo the unit that is blocking the your view of the wire, only need to remove 2 screws and remove one of the rubber pipes from the unit (anybody want to chip in and tell us what that unit is - the one that is kinda square which has a rubber pipe connected to something that looks like the EGR unit in front of the engine, next to the radiator).

Gently wiggle out the square box (there is a little single leg that fits into a hole at the bottom....don't break it) then you should have a better view of the clip that holds the O2 cable.

Using a needle nose pliers, remove the clip from the bracket (note that the O2 sensor that you bought also has the clip. I spent 20 minutes trying to remove the clip only to find that I don't need it...Duhhhhh!).

Then unclip the bracket of the O2 sensor (the electrical bracket). Make sure you pull the bracket and dangle the wires towards the ground.

Now, spray a little P-Blaster (WD-40) into the O2 sensor nut (a little difficult to maneuver the can in - I used a spray straw and turned the bottle upside down and sprayed a little onto the sensor nut.

Next....with a little finesse, I carefully placed the adapter onto the old O2 sensor (my hands are small....was not that tough).

Placed a wrench into the hole of the adapter and started turning it anticlockwise to remove it (I have a 36inch steel pipe that I used to increase leverage - a lot easier).

When turning it, you'll notice that the wrench will knock into the radiator fan shield. So what I did was to turn a little and then readjust the adapter and do it again. It's confusing....but you'll understand when you do it (especially on an NX with AC).

Once the sensor is removed, place some antiseize on the new sensor being carefull not to get any on the sensor part of the unit (otherwise....$60 gone!). I just squezed a little out from the tube and slowly turn the sensor around with the tube on the sensor threads and then used my finger to run the excess of the antiseize around the threads so that they are evenly applied on the threads.

Then gently placed the O2 sensor into the header. Once I placed it in there, try not to pull it out again (I was worried that I'll get antiseize on the sensor when I pulled it out from the threads on the header).

Use your hand to turn the O2 sensor so that you know that the sensor is correctly fitted into the threads whereas using the wrench or adapter might screw the sensor in at an angle that will screw up the threads). Besides, at this point, it's easier to screw the sensor in with your hands as there really isn't much room to turn the wrench even a quarter revolution.

Now that you have the sensor in as much as you can with your hand, use the adapter and wrench and tighten it. Couldn't find torque measurements....and also couldn't get a torque wrench in there....I just tighten it as much as I could. Hehehehe.

You're done. Reconnect the Negative wire to the battery...start the engine...and hear her purr.

Well...there you go.

If anybody want's to put this on the SE-R.net, please do. I myself couldn't find any info on installing and removing the O2 sensor.

If you have any questions, please e-mail me at modem_man@hotmail.com I'll get back to you as soon as I can.

Melvyn

hey melvyn...

thanks a bunch...and thanks for everyone else for the suggestions...really appreciate it...i hope they post up melvyn's 'do it yourself' procedure on se-r.net...im sure it would help a whole lot of us...

thanks again everyone....;)

Originally posted by FastNX
according to courtesy nissan, they're like 100 bucks or something, but thats bullshit because I paid like 94 canadian from my local dealer which is about 60 us. You will need a special socket to pull the sensor out of the exhaust manifold, but other than that it's pretty straightforward. Other things to check for bad mileage are TPS voltage, MAF grounding, cleaning the throttle body, cleaniing the EGR system. If your car takes too long to warm up, try replacing the thermostat, that may cause your mileage to drop.

Before reading any farther than the post above allways buy your SE-R O2 sensor from Pep Boys it is the same Bosch O2 Sensor the dealer sell but cost about $50.00 less. This is true for just about all years of Nissan vehicles O2 sensors are cheaper at Pep Boys than the Dealer the other day I replaced an Altima O2 sensor it cost 64.99 from PB and 114.99 at the Dealer.