Is it easy or hard to replace an O2 sensor? Are there any tutorials on line that show how to do it?
Thanks

 

If you have a VG, the sensor is on your Y near the cat. Just unbolt, bolt new one on and attach to connector. Done... grab beer and bask in your mechanical prowess...

 

you need an open end wrench, some anti-sieze and a new o2 sensor...just unplug the old one, unscrew it out of the y-pipe, put anti-sieze on the new one, screw it into the Y-pipe and plug it back into the harness. you need to buy an FSM or Haynes manual.

 

Damn... I have a 92 SE... anyone else?

 

exact same on VE and VG. the Y pipes are the same part. the other end of the wire is attached to the rear engine mount.

 

Does anyone know of an online site that shows step by step how to do it? I've looked through the haynes manual and I don't really like it as it seems to be more generalized for all 3rd generations. I might just buy a factory service manual.

 

As I said above, the VG and VE are EXACTLY the same in this matter.

jack up the car and you'll see the sensor sticking out of the side of the y pipe. can't miss it. unscrew with the 17mm end wrench. pull the wire loose along the brackets under the car. the connector is on the rear engine mount. remove. replace with new. don't lose the little rubber seal inside the connector. you can't buy them.
put back together in reverse order. done.

 

Thanks matt

 

how would i know or how can i tell that my O2 sensor is bad?

 

If youre running rich or one of a million other exhaust related problems...

 

to make it easier on you. run your engine until it's warmed up. then shut the car off and go to work. when the exhaust pipes heat up they expand. therefore making it easier to get the old o2 out.

 

And making it much easier to burn yourself in the process

 

1-unplug your O2 sensor
2-drive.... are you still having the same problem? does the car feel better?
3-if the car starts running a little better with the sensor unpluged then change it
-the main thing in the repair is your car jacks... you have yo lift your car so you can get under it! lots a WD-40 and buy a few heavy duty wire tires for the extra wiring from the sensor..

good luck

 

Noob, you make it sound like a 5 hour project. I don't get it, changine the o2 is maintenance, when you're getting a tune-up you should have the o2 replaced. I think most cars at 60,000 miles require having them changed. A lot of people neglect it because it's an expensive part but it's not that bad it costs $60 shipped we have it cheap. Now if you had a bimmer with OBD-II to change every o2 sensor could cost you about $400.00.

 

sorry for talking, i will never do it again
-O yeah and thanx for info BMW's O2 sensors,, ill remember that one so when i buy a bimmer and need to replace all the O2 sensors. im going to start saving my money now so i can get ALL the sensors replaced
THANK YOU! VERY MUCH

 

out of curiousity, would a bad o2 sensor make the car smell like gas? Figured id ask before dealing with the injectors.

 

possibly, but it's most likely leaking fuel lines on your injector rail. it's the most common place to leak.

 

Out of curisosity too What would make car smell wierd? Not like rotten eggs, not like gas but just stinky exhaust.

 

bad core??