Oxygen Sensor

[G35KP]

My check engine light's been on for about 2 weeks now, I brought it to a guy and he did the diagnostic check and found that the problem is that my oxygen sensor needs to be replaced. So, of course, its like $200 for it so he says (I have an 02 G). However, I know better, and know that I could easily get that cheaper from somewhere else, plus my friends are good with that sorta shit.

What I need to know is, what is recommended to get as a replacement? I mean, I was lookin on ebay to see prices, and came across this http://cgi.ebay.com/ebaymotors/MITSUBISHI-...sspagenameZWDVW ('http://cgi.ebay.com/ebaymotors/MITSUBISHI-GALANT-98-03-OXYGEN-SENSORS_W0QQcmdZViewItemQQcategoryZ33557QQitemZ798 6255585QQrdZ1QQsspagenameZWDVW') -- Bosch O2 Sensor, $80 shipped. Ok, so that sounds good.. but then I go check autozone.com... http://autozone.com/servlet/UiBroker?UseCa...7EOXYGEN+SENSOR ('http://autozone.com/servlet/UiBroker?UseCase=C001&UserAction=performSearch&Parameters=Auto+Store%7C%7EREGULAR+PARTS+LOOK+UP%7 C%7EOXYGEN+SENSOR') and I see that there are different types, some have more wires than others, varying prices... etc. I need to know, what's what and what is it that I need to get?

Lookin at that $30 Arvin is pretty tempting.. lol.. but I dont wanna get some shit that'll just bust on me.

Also, I do not know if the sensor is located before the catalytic converter, or after. I thought there was only one 02 sensor in my engine (i4), and if that is the case then why are there 2 different kinds that you can get, unless it differs on the V6??

Any help is much appreciated https://www.thegalantcenter.org/style_emoticons/default/smile.gif

[SkylineG1]

There are two O2 sensors on your G. On on the factory header and one after the cat.

[G35KP]

Ok then, so how do I figure out which is the one that needs to be replaced? Or am I gonna have to bring it back to the diagnostic stuff in order to know?

[SkylineG1]

<div class='quotetop'>QUOTE(G35KP)</div><div class='quotemain'>Ok then, so how do I figure out which is the one that needs to be replaced? Â*Or am I gonna have to bring it back to the diagnostic stuff in order to know?</div>

I say you take it to Autozone and they can do the reading for you for free. If you don't have the time then I can do it at the meet for you and tell you which one it is that's going bad.

[G35KP]

Ok, I'm gonna head over to autozone now to figure out which one needs to be replaced. Once I do that tho, I still need to know which is best to get as a replacement (and I have no intentions of believing the people at autozone because they just want the most money out of me). Lookin at this, http://autozone.com/servlet/UiBroker/?UseC...RTER&PageSync=1 ('http://autozone.com/servlet/UiBroker/?UseCase=C001&UserAction=answerRequiredQuestion&Parameters=%7C%7ESENSOR+LOCATED+BEFORE+CATALYTIC+C ONVERTER&PageSync=1') what would be the best choice? I'm likin that $30 one, I dont feel like wasting so much money on a damn 02 sensor.

[Jet Black]

You could just install an O2 simulator for about $10. While it may help kill the ozone layer, just remeber we never signed the Kyoto protocol.

I say do it!

[G35KP]

lol too late

I just got the bosch 02 sensor, it was like $85 after taxes.

Printout from autozone:

TROUBLESHOOTING P0135

The PCM has determined that a malfunction exists in the heater circuit for oxygen sensor 1 in bank 1. (oxygen sensor 1 is closest to the cylinder head before the catalytic converter. While oxygen sensors 2 & 3 are located further downstream and are typically mounted in or after the catalytic converter) (bank 1 identifies the location of cylinder #1, while bank 2 indentifies the cylinders on the opposite bank)

I got the universal 02 sensor, which means I'm gonna have to splice some wires.. hopefully this won't be too much of a pain in the ass to change.

[Xrs2]

Splice the black wires one by one so you don't confuse them.