Blown O2 sensor
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This is a discussion on Blown O2 sensor within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hey guys, so ive had my 2002 wrx wagon for about 6 months now and i think its safe to ...

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    Blown O2 sensor

    Hey guys, so ive had my 2002 wrx wagon for about 6 months now and i think its safe to say that i know how to drive it well now. It was the first car i learned to drive stick in so the clutch aint in the best shape...

    But anyways ive got to the point where i wanna fix it up and start putting some after market parts into it but before i do that i gotta get it up to par..

    The CEL came on about 2 months ago, got it checked by my buddies mechanic when he was picking up his car (he was nice enuf to do it for free) and IF i remember correctly and thats a big IF, it was bay 1, sensor 1 which needed replacing.

    Now i had my car at a local shop for a couple minor things the other day (brake lights, exhaust brackets) and i asked him to run it thru again to verify thats the right sensor, now here comes the good part...

    This mechanic wants to charge a full HOUR!! to plug his computer in ($92) so i said forget about it but he looked up the price and told me that the sensor alone costs $592...

    $592!!! that seems a bit ridiculous to me, can anyone either confirm or deny that?

    also he said he took a look at the intake manifold and said he had no idea where this sensor is (hes mostly an american muscle kinda guy not a subaru tech)

    ok now im gonna take it somewhere else to get this done now im just wondering, do mechanics in your area charge for a computer analysis? and how much? cuz i think i should get it checked again before i buy the part

    so i guess all i wanna know is.. can i get this O2 for cheaper anywhere else? and how hard would it be to replace it myself to?

    any input is much apreciated
    -REID

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    Supporting Member yamaha_rider619's Avatar
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    In red, it has the 02 sensors. Front is behind the front passenger wheel, rear is on part of the downpipe.

    Advance auto parts: http://shop.advanceautoparts.com/web...2%3A+o2+Sensor


    I understand you are new, and i hated people saying it to me, but search the web.
    Josh
    2003 Subaru Wrx Vf39'd
    Bugeye mafia #300

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    yes ive seen that diagram before when i was looking at exhausts, now arent there 02 sensors before the engine as well? I thought it measures how much oxygen goes into the engine and then again after the engine to use the correct amount of fuel for combustion.

    i know u wish id do my own research but this just happens to be the way that i do it... input from real ppl is better than searching endless blocks of info on the world wide web, in my opinion

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    Supporting Member yamaha_rider619's Avatar
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    Quote Originally Posted by WestCoastBoardr View Post
    yes ive seen that diagram before when i was looking at exhausts, now arent there 02 sensors before the engine as well?
    MAF sensor?

    Quote Originally Posted by WestCoastBoardr View Post
    i know u wish id do my own research but this just happens to be the way that i do it... input from real ppl is better than searching endless blocks of info on the world wide web, in my opinion
    I found my information from the WWW, which i gave to you...
    Josh
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    Registered User dbya rx's Avatar
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    it is pretty standard to be charged an hour mechanical rate for CEL decoding and ECU checks. the mechanics sometimes have to spend thousands of dollars for their scanners, and need to make up their money.

    just cause youre paying for an hour of labor doenst mean they are actually working on it for an hour...sucks but true

    take your car to a mechanic that specializes at least in turbo-charged motors. if you can find a subaru specialist, even better.

    american muscle car mechanics are not going to be the best for your vehicle
    Stink-eye Mob #814004
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    Quote Originally Posted by dbya rx View Post
    it is pretty standard to be charged an hour mechanical rate for CEL decoding and ECU checks. the mechanics sometimes have to spend thousands of dollars for their scanners, and need to make up their money.

    just cause youre paying for an hour of labor doenst mean they are actually working on it for an hour...sucks but true

    take your car to a mechanic that specializes at least in turbo-charged motors. if you can find a subaru specialist, even better.

    american muscle car mechanics are not going to be the best for your vehicle
    ya i realize that but the shop is close to home and my old 7th grade teacher works there so i dont mind getting minor things done there.

    So the MAF sensor is the one easily accesible from the top at the cold air intake? is this the only sensor before combustion?

    i guess i will set up an appointment at subaru, may as well get it scanned cuz the guy who did it for free isnt exactly the most reputable mechanic.

    now from what i know about mechanics is they like to mark up everything so they can make more money, is there anyway i can order the part online and get them to install it? or would they only do it if they get the part themselves

    my car is 100% stock btw

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    Supporting Member yamaha_rider619's Avatar
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    most dealerships/repair shops do not like to use parts you order to install. Because they cant guarantee they will work or not cause problems.

    You can clean the maf, just search clean maf. And yes the maf is located between the intake box and the blue inlet hose in this picture:
    Josh
    2003 Subaru Wrx Vf39'd
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    ok it seems that this mechanic didnt know what he was talking about by telling me that he couldnt find the sensor on the intake manifold

    now im not sure if thats the right sensor all i remeber is bay 1 sensor 1, i didnt write down the code, but even if it is just a little dirty i need to reset the ECU to get rid of the CEL

    i guess ill just hafta suck it up and pay whatever it takes, work some extra hours, i just want to get it fixed..

    too bad i got a $350 speeding ticket to pay off first

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    Moderator Donkey's Avatar
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    Bank1 sensor 1 is the front O2 sensor..........
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    ok guys ive done some research on my own

    and i decided im gonna do it myself, all i need is that socket and im good to go, also my mud shield is already being held up with construction tie-wire cuz those cheap plastic clips keep shearing so thatll be easy enough

    thx for the help ill probly be around alot more often now

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    Supporting Member yamaha_rider619's Avatar
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    open ended wrench does the job as well, I have done it that way.
    Josh
    2003 Subaru Wrx Vf39'd
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    Registered User 06scoobyrex's Avatar
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    Quote Originally Posted by yamaha_rider619 View Post
    open ended wrench does the job as well, I have done it that way.
    Go to autozone and get an o2 sensor socket, believe me its a ****ing ***** to get off with a wrench... the wrench size is 24mm if you can find 1, but your gonna need the socket it will save you hours of fusteration...
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    Supporting Member yamaha_rider619's Avatar
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    Quote Originally Posted by 06scoobyrex View Post
    Go to autozone and get an o2 sensor socket, believe me its a ****ing ***** to get off with a wrench... the wrench size is 24mm if you can find 1, but your gonna need the socket it will save you hours of fusteration...

    When I used the open ended wrench it wasn't bad at all.
    Josh
    2003 Subaru Wrx Vf39'd
    Bugeye mafia #300

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    ok so i ordered one from advanceautoparts.com, and things started to get messed up

    i live in canada so i called em up to see if i could get free shipping to canada, the guy said he can do that for me but now i find out that they dont even ship to canada at all

    so what this guy at advance autoparts did was order it online thru canadapartsonline.com while i was on the phone with him thinking he was doing the order for the company he works. so he was taking down all my credit card info and stuff and just ordering thru his COMPETITORS site

    now when it came in the mail it was the wrong one, and i found out why, when i search canadapartsonline.com for 2002 wrx, it comes up with the wrong engine (N/A 2.0L) so thats how i got the wrong one

    now the fishy thing is why would he order it thru his competitors site and ask me for all my info when theres no record of his name or order form but yet he still has my info

    just to be safe im going to change my credit card number and never trust this site again, because i dont want to take any chances.

    i returned the wrong o2 sensor back to canadaparts no problem so all i need to do now is find a more reliable source, i live close to the border of WA so im going to see if they have one in stock at NAPA or something
    Last edited by WestCoastBoardr; 09-17-2010 at 01:51 PM.

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    Supporting Member yamaha_rider619's Avatar
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    hopefully they do! The guy should have just told you, they don't sell and and to order it from a different place in Canada. Hope it all works out for you, and he doesn't screw you over.

    Hopefully you can your sensor fixed though!
    Josh
    2003 Subaru Wrx Vf39'd
    Bugeye mafia #300

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