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how come i hear 3 and 4 wtf?

This is a discussion on how come i hear 3 and 4 wtf? within the Firebird / WS6 forums, part of the Vehicle Specific category; Lol how many 02 sensors are on are cars? i see three o2 sensors and three cats on my car ...

  1. #1
    Junior Member
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    Midnight Blue
    1998 Pontiac Firebird

    how come i hear 3 and 4 wtf?

    Lol how many 02 sensors are on are cars? i see three o2 sensors and three cats on my car its a 98' firebird formula ls1 a4 2nd owner and i dont look at her belly much lol but it has a 1st owner catback, so far for the oil changes and fuel filter once i have to say while im all grimy under there i tend to not look around much lol get done and get out from under it lol asap

  2. #2
    NY Representative basballny2's Avatar
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    Red
    2001 ws6

    u have 4 sensors.....2 fronts 2 rears and 2 cats

  3. #3
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    Midnight Blue
    1998 Pontiac Firebird

    Quote Originally Posted by basballny2 View Post
    u have 4 sensors.....2 fronts 2 rears and 2 cats
    i replaced 3 o2 sensors Bosch 13444 the 3rd 3 days ago for a po157/po161 and a po161/pd SES light, and each was behind a cat i will take and post pics because its weird to me also i have 2 front cats off of the factory exhaust manifolds and the last one the third is under pass floor board and for each cat theres 1 o2 sensor 3 total, after that its a catback by previous owner and havent seen a 4th of either, cat or 02 wtf carfax says car was from TX but dont mean much? dont worry am wanting to try out my new digi camera to help you guys out also over the weekend hopefully. just wish had it on a lift for clarity but ill try... it passed smog last yr here in CA just fine but 3 of each is weird....
    Last edited by travs98ls1; 07-02-2010 at 07:12 PM.

  4. #4
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    Midnight Blue
    1998 Pontiac Firebird

    Anyone have any pics of there factory Y pipe cats /o2s i can look at?

  5. #5
    NY Representative basballny2's Avatar
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    Red
    2001 ws6

    the sensors are connected.....theres 1 on each end....a front and rear 02 sensor on each side........im a little confused at what your trying to say....ill get some pics of my stock stuff thats up in my attic 2marro for u

  6. #6
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    White
    2008 Hummer H3

    ls1= 4 o2's 2 front, 2 rear.. 2 cats
    3800-II = 3 o2's 2 front one rear.. 1 cat
    :\Users\Steven\Pictures\d6ftg5nh.gif


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  7. #7
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    Black & Blue
    '02 WS.6 / '07 Suburban

    Here are the pics that I can find:






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