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O2 sensor questions

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Old 08-24-2013, 07:27 PM
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Hey guys, i have a 99 cherokee, 4.0 L with about 140k on it, so i figured its about time i should change the O2 sensors (since they are originals). Is there a certain brand that seems to be the best, or certain brands to avoid? Also, did anyone replace theirs at about the same miles and notice any change?

TIA
Old 08-24-2013, 07:33 PM
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NTK is what came in them from the factory. I forget the part numbers. You can get them cheap on rockauto.com
Old 08-24-2013, 07:52 PM
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I've been leaning towards NTK, so i guess i should go with that.
Thanks man!
Old 08-24-2013, 09:51 PM
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+1 NTK

While you're at it get some. NGK ZFR5Ns, too. Excellent spark plugs for the OBD-II 4.0Ls. My '99 likes them.
Old 08-25-2013, 12:15 PM
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Never buy Bosch 02 sensors. NTK only.
Old 08-25-2013, 01:54 PM
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For reference, the OEM for the Renix years is actually Bosch. NTK for any Chrysler models.
Old 08-27-2013, 03:07 AM
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Thanks for all the replies! NTK it is!!
Old 08-27-2013, 11:11 AM
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Originally Posted by Jeepster242
Thanks for all the replies! NTK it is!!
CoffeeCommando w/ NTK +1, Salad w/ Bosch 0
Old 08-27-2013, 11:24 AM
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Originally Posted by CoffeeCommando
CoffeeCommando w/ NTK +1, Salad w/ Bosch 0
Eh? I recommended NTK in the 4th post...
Old 08-27-2013, 11:47 AM
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Originally Posted by salad
Eh? I recommended NTK in the 4th post...
You recommended other things too. TMI penalty.
Old 08-27-2013, 11:57 AM
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Originally Posted by CoffeeCommando
You recommended other things too. TMI penalty.
I'm sorry you find providing complete information so offensive. Clearly I have lost this battle of Internet wits that I had no idea I was even involved in. Please accept my apologies for delivering specific advice instead of proclaiming that one part fits all variants of a vehicle that was produced over the course of 28 years under three manufacturers with eight different fuel systems.
Old 08-27-2013, 11:59 AM
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Originally Posted by salad
I'm sorry you find providing complete information so offensive. Clearly I have lost this battle of Internet wits that I had no idea I was even involved in. Please accept my apologies for delivering specific advice instead of proclaiming that one part fits all variants of a vehicle that was produced over the course of 28 years under three manufacturers with eight different fuel systems.
Complaining about TMI on the play, -1 point.
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