i am looking for the primary o2 sensors for a 2k2 max. i dont need the secondary but the primary sensors. anybody know a cheap place to get them from?

 

if you dont mind making a few splices, you can pick up a universal one from any auto store,for less than $50

 

Vasily, are u getting o2 sensor becuz of the p0300 code?

 

I just replaced all 4 on my 02 at 85k. I bought them from oxygensensor.com. They were very helpful and had the best prices. I got the Warner version as everyone seems to be out of teh Bosch right now. The Warner O2s come with the color coded plugs just like OEM, proper wire lengths, zip ties, and anti-seize. Very nicely done.

 

steven88 the reason is i am goign to be getting headers soon for my maxima and i will be using a o2 sim for the secondary o2 sensors and the primary i just want to replace with everything already removed. i have been looking at oxygensensor.com but for some reason i would rather have bosch then warner. maybe its because i never heard of warner before.

 

ic...do you know whats causing your p0300 though?

anyway, I wouldn't mind trying out the warner ones...I heard of them before...and to be honest, I heard nearly 90% of all oxygen sensors do the same thing anyway...they just send voltage back to the ecu and flucuates between lean or rich....

can anyone else quote warner's quality?

 

my p300 code. hmm still didnt figure it out. o ordered a new set of ngk spark lugs cause my ldont look too good. i am positive there isnt any intake leaks. its not the injectors. still dont know but i will figure it out sooner or later.

but yeah about warner's quality? or anybody know where i can get bosch?

 

i have been using warner from oxygensensors.com for about 1.5 years for one of my primaries. i used this one because its shorter and allowed a tolerable space between the bung in the header and an ac compressor line.

 

vasily, under what conditions do u feel the misfire? cuz I do have that code as well...but I know its related to the bank2 sensor 1 o2 sensor....

I know becuz everytime I unplug THAT o2 sensor, the code doesn't show up...my idle is smoother, and I don't feel a misfire in the mid-range...

everytime that o2 sensor is hooked up, I start getting a rough idle...a loss of power in the mid-range...and major lean-ness according to the tailsniffer on my dyno runs...

so right now I have it unplugged and run it like this...it feels alot better except that dirty SES light...I'm going to see if a new o2 sensor will fix it...cuz the FSM does say primary o2 sensor being a culprit to 0300

 

you have headers right? which sensors are left after the header install? i am just going to buy those 2 sensors.

but my missfire is exactly what you are describing.

 

www.buyoxygensensors.com ask for Maxima.org discount

 

The primaries are the only ones you really need after a header install. The secondaries are just there, either extended or simulated (with heater wires intact), so you won't throw a code.

 

and how much is that? i am assuming you can get the discount ordering online?

 

alright now i need the primary o2 sensors. steven88 i didnt get to thank you on aim for your advice but it fixed the problem. all credit goes to him.

 

I am pretty sure you can only call and do it. IIRC it is 15% off.

So what was wrong?

 

Ok, I am somewhat confused with what o2 sensors need to be replaced after a Header install. I thought it was the just the secondaries to simulate them. I am planning to install Hotshot Headers soon and am unaware of what needs to be done to not get a code. Thanks for any advice.

 

i am repalcing my primary o2 because they are bad. they are at fault for the missfire. both of them are diconected right now so i got a check engine light on but the missfire is gone

 

vasily, did u do more test driving today? and still no 0300 code? lemme know wassup

 

yup no code and the car is running perfect again. i still have both primary o2 disconected but will hook up the rear and see what happens

 

No O2s need to be "replaced" when you install headers, unless they are bad to begin with.

1. You leave your primaries in, ie. connected in the appropriate bungs in the headers.

2. You either extend your secondaries behind the main cat or you simulate them.

If you simulate them, there are 2 ways of doing it:

- O2 sim with heater wires from secondary O2 sensors still connected

or

- O2 sim with resistors to simulate heater wires, and secondary O2 sensors disconnected completely

More info here: www.o2sim.com

 

Thanks for the information. It seems like most people simulate their o2 secondary sensor's, from what I have searched on the forum. Is it recommended to just simulate them or just extend them?? I tried searching for instructions on the install but could not find anything good enough. Appreciate it.

 

i just bought a o2 simulator from o2sim.com for $30 shipped.

 

It seems to be a matter of personal preference:

http://forums.maxima.org/showthread.php?t=449778

Simulating is the most convenient, but if you have the means to extend and weld the O2s, that's fine too. Although, people have had issues with codes even after extending because of the resistance changes in the extended wires, solder joints, etc.

Its up to you really.

 

that link is to oxygensensors.com...guess that works too:-) just point that out

 

Ok thanks, Puppetmaster. Very valuable information. It seems like simulating is the way to go. So, just buying one dual output o2 sensor simulator from someplace like http://o2simulator.com/24803.html is all I would need for both of the secondariy o2 sensors? Thanks. Jesse

 

Yup, one dual output is all ya need.

The instructions that come with the sim seem sufficient, but if you need another write-up, BlackbirdVQ has one that's floating around here somewhere.