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O2 sensors

This is a discussion on O2 sensors within the External Engine forums, part of the LSx Technical Help Section category; I have got some long Tube kooks with their y pipe, and the o2 sensors are rattling like crazy. Driving ...

  1. #1
    COME AT ME BRO Soltakr's Avatar
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    Question O2 sensors

    I have got some long Tube kooks with their y pipe, and the o2 sensors are rattling like crazy. Driving me nuts I have tried warpping them and bending the ring but nothing helps. Is there a brand that doesnt make any noise?

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    Life in the Fast lane sunsetorangess's Avatar
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    rattling? Are they tight? bung's stripped?
    J
    2001 SS, Its not the car its the Driver that matters....

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    15 sec. Oh yeah, its fast UTVols98's Avatar
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    Sounds like the bung's stripped.

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    COME AT ME BRO Soltakr's Avatar
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    Stripped?! I hope not, this thing is brand new. (the y-pipe) Anyway to fix it or do I need a new x-pipe?

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    15 sec. Oh yeah, its fast UTVols98's Avatar
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    I don't think you'll be able to re-thread the bung so you might just have to cut it out and then weld another bung, but I could be wrong.
    2000 Z28: Accufab 4150, Vic Jr. 150 shot, Patriot stg 2 heads, big cam, FLT Stg VI 4L60, S60 rear. Waaay more stuff to list. 3100 LBS.

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    COME AT ME BRO Soltakr's Avatar
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    CRAP..hmm they dont seem to be moving but the rattle when I bang on the exhaust pipe.
    (2002 SS 6spd) SLP lid & scoop,NX wet kit & maf, NGK-TR6,160',MSD,Kooks LT & y-pipe,SLP Dual center exhaust,cut-out,tuning SUSPENSION Chromoly k-member, Chromoly adjustable upper and lower a-arms,koni s-adj,Eibach sport springs,Wilwood brakes,SB,BSK,TA,TAB,SFC,PHB,ST,18x9.5&18x10.5, Nittos

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    Member 89LX's Avatar
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    Sure it is 02?

    If they are screwed in tight I can not see how they (the sensing element) could rattle. The end of your 02 sensor would have to be broken and swinging internally in the breeze. Pull them out and take a look. If okay, your rattle has to be something else.
    2000 Z28 M6, SLP Lid, SLP Bellows, SLP UD,
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    COME AT ME BRO Soltakr's Avatar
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    good point, I'll have the o2 sensors pulled out and check if they shake.

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    15 sec. Oh yeah, its fast UTVols98's Avatar
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    You sure it might not just be the exhaust rattling on something on the car.

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    COME AT ME BRO Soltakr's Avatar
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    Yea, check the whole things, from headers back. Knocking, pulling and pushing on everything to make sure nothing else was making noise. Its weird.. gets loader when I let off the gas.

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    15 sec. Oh yeah, its fast UTVols98's Avatar
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    I still think it's the exhaust. Mine rattles on the chassis when I ease into the gas, but is fine when in WOT.

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    cutting and welding mark21742's Avatar
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    I hate to ask, but are you sure a bolt or anything else didn't end up falling into the exhaust and is rolling around in there? lol I have a gravel floor in half of my garage and when I put my LT's on I got a few small stones in it...drove me nuts but I finally figured it out, pulled the mufflers off and got the stones out of them

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    COME AT ME BRO Soltakr's Avatar
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    Haven’t checked that yet, put I did pull the O2 sensor out. If you shake them they sound like a rattle. Check the computer and the sensor are working properly. Talked to a few exhaust shops and they said that over time or higher miles, the sensor can loosen up and make noise. "All the expanding and contracting from heat tends to cause this." I checked my local GM shop and DAMN these are expensive. $153ea for the primary and $160ea for the secondary. Called PEPBOYS theirs are $70ea but they don’t show different part number for the primary and secondary like GM does. Hmm, what do you guys think?

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    Member 89LX's Avatar
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    All the Same?

    Last (and only) time I checked on ordering they were all the same sensor just different wire length with gave them a different P/N. I got my front/right from auto zone.

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    COME AT ME BRO Soltakr's Avatar
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    Good point about the wire length.. I have extention because of my headers so maybe I can get away with the front cheaper ones.

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    Just to note, you'll notice a significant quality difference between the AC delco and the Pep boys cheap version. Especially on the wire shielding.

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    COME AT ME BRO Soltakr's Avatar
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    Yeah, I figured as much. I'm going with the Delco, they have lasted over 60k and have run the piss out of it including spraying them is N20 haha

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    You can buy them on ebay in the buy it now section for like 95 each. Type in ls1 O2

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    COME AT ME BRO Soltakr's Avatar
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    here is an dumb questions, how many cats can on the stock 2002?

  20. #20
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by Soltakr View Post
    here is an dumb questions, how many cats can on the stock 2002?
    should be two... I think
    my 04 gto has 1 on each bank then right behind each of them there was a resonater that from the outside looks almost identical to a cat... there are no dumb questions, trust me lol

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