Hi,
i have a 2000 Civic Ex, i need to change the primary 02 sensor. I dont know the location of the primary o2 sensor. If anyone can tell me where its located , that would be very helpful. Pictures showing the sensor would be very helful. Also if somene can give me tips and headers for changing the sensor , that would be awesome. Also should i be getting a honda part or would after market work just as good, because there is a major price diffrence.

THanks alot

 

does it have the sohc vtec engine ?

 

It's on the exhaust manifold. Take off your heatshield and you will see it. I'll try and find a pic.

 

Here's a pic from a random exhaust manifold. It's circled in red.

 

^^ negative danny boy...that photo looks like its Y8 manfold.

the canadian 2000 EX came with the D16Y7 motor so the primary sensor should be visible right on the exhaust manfold on the upper front side (about on top of the built in catalytic convertor). unlike on the Y8 where its on the bottom side of the manfiold....as shown in the above photo.

this pic is of a Y7...notice the white wire at the lower end of the heat shield...that i believe is the wire coming out of sensor.

 

i cant type manifold properly....sucks

 

you will need a special socket to move it ..

 

Good observation smarty pants!

 

*claps claps*...Very good. there is a difference between the y8 and y7 due to the cat locations. again...very good

ps u will need a special socket for doing it.

 

you shouldn't need a special socket, a 22mm wrench should work just fine. make sure you put some anti-seize compound on the threads of the new sensor before you put it in.

 

thanks a lot guys , the info helped a lot.


cheers

 

how much is it usually to replace the o2 sensor? parts/labour....before you say yea its easy you can do it yourself... i know i could but i needed to clear up some other probs and might as well have it done then also

 

yea i heard they break easily and its easier changing the whole manifold rather than get the pieces out

 

hondas don't usually strip the threads out, but when I worked at nissan, they were bad for doing that.

A tiny little dab of anti-seize and NOT tightening the living crap out of the thing go a long way for being able to remove them later on. I've seen some stuck *** o2 sensors in my day from tuning cars.

I usually just use a 22mm wrench (like weiRtech said) but I also have 2 different kind of o2 sensor sockets for those stubborn ones, the only problem is, sometimes space is an issue, so trying to use a socket can be more hassle than its worth.

If its really stuck, soak it in penetrating fluid (PB blaster, wd40, etc) for an hour or so then have at it. If its still stuck, its time for heat, get out the propane torch. It'll take a while using a propane torch, but most people don't have acetalene torches at home, so you'll have to be patient waiting for the propane torch to heat up the o2 sensor enough to bust it loose.

A shop would most likely charge at least 1 hour labour to remove and replace the o2 sensor.

 

I replaced mine (by the gas tank) last winter on a 2000 civic se and it was about $500 at the honda dealership