Is it hard to replace the Oxygen sensors? and where do you find it though? I'm looking towards to replacing it while cleaning the egr valve at the same time. How much does the piece cost and is there a diy instructions around?

 

I wrote one up a while back. I'll see if I can find it.

As for the part, the primary O2 sensor is 76 and change shipped from Tim at hondacura world.com (no space).

 

The one I wrote up was very concise.

Basically, jack up the car, and look by the flex pipe. You will find the O2 sensor. Trace the wire, and you will see that it's secured to a black metal plate. It's held in by a 10mm bolt, so get that bolt out and the plate will come off.

Now, from the top of the engine bay, locate the harness that the O2 sensor plugs in to. It's by the firewall. Unplug that. I tore up my finger because I had a loose grip, so be careful with it. Now just unscrew the O2 sensor from the pipe and that's it.

Reverse the procedure to put the new one in. Don't clip in the harness until you've screwed in the sensor, because then the wire will get all tangled up.

 

are there any benefits to changing the o2 sensor?

 

As time goes by their ability to measure oxygen levels degrades. Most often, this results in the car running too rich, using more gas, and running terribly. Not to mention that a car running too rich is really bad for your catalytic converter.

 

162,000 miles on mine and its still doing it job just fine

 

I HAVE ONE if you want...its brand new in box, still wrapped and everyhing.

I got because i though mine was bad but it turns out i didnt plug the wires good enough so the engine light came on. make me an offer to my PM.

O2 replacement:

Its really easy, get under the car (jack both sides preferably) and with an adjustable wrench just turn that puta over...if you're not strong enough make an extension for the wrengh or have a friend pull on it too.

 

I would not recommend jacking up both sides. That's a disaster waiting to happen, since the car could shift. Use jackstands.

 

yeah, my bad...i wasnt trying to kill you...

i do wanna sell you my O2 though, its sitting in my mom's book closet.

its an original OEM rear (after-cat) O2 sensor, bought at the dealership for $136.xx...you can have it MUCH cheaper...and free shipping.

When you're under the car, look where the header's downpipe connect with the catalic converter (which is covered by 2ugly pieces of metal). Take off these 2 metals (4-6 bolts) and the O2 is on the top towards the front of the catalic converter. You'll see it, it has a wire sticking out that connects to something under the car.

Just unplug, unscrew, screw the new O2 and connect...voila! total time => 45min (including jacking up and a 15min beer break)

 

So, do you need the O2 sensor?

 

When the O2 sensor starts to go bad, the OBD II program inside the PCM/ECM would have detected it and the "ENGINE" warning light in the instrument panel would then turn on solid or blinking, and an O2-sensor-related error code would then stored inside the PCM/ECM for later diagnostic retrieval.

An O2 sensor is not cheap, and there are two of them on the car : one before the catalytic converter and one after. If there is no indication that the O2 sensor is bad, why wasting your money replacing working sensors. I would worry more about the tranny than the O2 sensors.

 

The OBDII doesn't always necessarily throw a code for a dying O2 sensor. If it's dead, then yes, the MIL will come on. But when my primary was dying, the light didn't come on until it was completely dead = no voltage. And I was getting these weird idle problems.

FYI, our cars have a primary before the cat, and secondary IN the cat. Primary OEM sensor goes for about 76.xx shipped from Tim (don't buy from local dealers at a rip-off price, or buy aftermarket, because Acura could void your PCM warranty. Mine's spliced to hell and back, so the warranty's already fucked, anyway, but I would still rather use OEM sensors.)

 

...the sensor i'm trying to sell him is OEM one, bought at the dealership for 136.00...i'm trying to sell it for watever w/ free shippin. pm me.

 

Do you think that the O2 sensor could possibly have a bearing on my car idling low after starting the engine when warm? I am still trying to determine why it is my RPMs only go to 1250, immediately drop to around 500 (like it wants to shut off) and then after several seconds rise back to 750. It did not do this in the past, just started doing so within the last twelve months or so. I have just come to accept it for what it is because I have not been successful with finding its cause.

BTW, no CEL at all, and I am still on my original sensor at 113,000 miles.

 

idk, but if you need one, i got an after-cat one...oem, bought at dealer, still new. 80shipped. let me know

 

i just wait for the dash to say something and then take it to dealership =/