Nissan Maxima: '96 Maxima, O2 sensor

Skierick wrote: 

Replace all three O2 sensors? I'd just replace the front ones. They can
be difficult to get out, but usually it's not a big deal. You need a
special socket and they usually come out easier if they are hot. The
knock sensor is a common failure on those. It's won't turn on the check
engine light by itself, but will cause you to lose mileage and power.
It's not bad to change if you have small hands. Visit www.maxima.org.
Lots of tips and help on keeping your Max happy.

-jim

Buy the bosch OEM o2 sensors for about $110 each. The front two are
more important than the rear (which just monitors cat sufficiency).
Buy a crows foot O2 sensor socket attachment for $10 at autozone.
Jack up the front and place on jackstands. remove the O2 sensors and
disconnect the harness which is fastened at several point along the
way to the harness connector. Replace and you are done. Do not
replace the Knock sensor unless it appears as a code on it's own
(without any other codes). $1100 is highway robbery.

Get a $15 Haynes manual if you need guidance.

CW

On Wed, 08 Sep 2004 01:29:54 -0400, in alt.autos.nissan.maxima you
wrote:
 

Hey thanks sooo much for the great info on yhe o2 sensors, I have the
cofidience to do the job my self. if you have any tips or tricks to make
it easier please post. The dealer also recommends replacing the egi sub
harness, what is that and where is it? Once the sensors are replaced will
the codes clear or must I clear them some how? Thanks Again!

On yours it is a easy. Go to a good parts store and for about $100 you
can buy the oxygen sensor and the knock sensor should be about the same.
If you get a generic version be sure to solder the wires to the old
connector and make sure the overal length of the new one matches the
lingth of the old one. That is, measure the old length of the wire
going to the oxygen sensor and write this down. When you cut the wire
and solder the new unit in make the wire the same length. Oxygen
sensors are self generating and the wires need to have the same
resistance as the original. Solder the connection and use shrink tubing
to seal out the elements. On the knock sensor it is just a matter of
unscrewing the old one and replacing it. The knock sensor is in the
block close to the pan and the oxygen sensor is in the exhaust close to
the manifold.

Skierick wrote:
 

"Skierick" <net> wrote in message news:talkaboutautos.com... 

The only one you can really see with the car on the ground is the rear one.
I'm sure you'll have no problem getting the others out either. Nothing wrong with
paying to get it done, but we don't like to pay too much.

It's easiest if you use an O2 sensor socket (with a slot for the wires).

Ok, Thanks for all the good info, I'm going to takle the job myself. Will
let you know how it goes. I still don't know what the egi sub harness is.
thank you all.

You really should get a Haynes manual. It should tell you the general
location of all of the sensors, and also has a section on how to read off
the computer codes and clear them. It's easy, but hard to explain without
pictures.

"Skierick" <sbcglobal.net> wrote in message
news:talkaboutautos.com... 

Alright, the job is done and all is working normally. I got the parts
online for half the of what the dealer wanted, the o2 sensors from bosch
are great they have the connecters and the ties on them so you just screw
em in and plug em in. The knock sensor is easy to see but hard to get to.
Chiltons manual says to remove the cross over manifold to replace it, (no
way) once I got it out with a long ext and a swivel socket, I'm wondering
how to get it back in (hands are too big). Lucky me my wife is wonderfully
petite and she was able to get the bolt started and then I just tighten it
up. I gave her a big kiss and thank her for saving me about 4 hrs of work.
She returned the kiss and thank me for saving us $800. it's all goood thank
for all the help.