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Unread 04-18-2013, 07:55 AM   #1
wage
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2004 LJ, auto, 4.0. Question: Is there an 02 Sensor 101 for Dummies?

Hey Gang,

2004 LJ, auto, 4.0. Question: Is there an 02 Sensor 101 for Dummies?

My 04 LJ now has about 82M miles on her. after spending too much time reading this Jeep Porn, I think I should be looking at replacing my 02 Sensors.

1_ I know there are 4, but where are they located?

2- How hard to replace?

3- Do I need any special tools?

4- Do I use an anti sieze goop on the threades?

Tahnk you in advance for your help.

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Unread 04-18-2013, 07:58 AM   #2
Unlimited04
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Quote:
Originally Posted by wage View Post
1_ I know there are 4, but where are they located?

2- How hard to replace?

3- Do I need any special tools?

4- Do I use an anti sieze goop on the threades?

Tahnk you in advance for your help.
1. two before the mini-cats in the manifold, two after the mini-cats, in downtube.

2. nope, easy

3. O2 sensor socket. basically has an open end so you can slide it on over the wire. http://www.harborfreight.com/3-8-eig...nch-97177.html

4. yuppers
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Unread 04-18-2013, 08:42 AM   #3
NotURMailman
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82,000,000 miles?

Me thinks that was a typo...
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Unread 04-18-2013, 01:08 PM   #4
wage
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does anyone have the following:

Part numbers for 02 sensors:
Front Pre cat
Rear Pre cat

Front Post Cat
Rear post cat

also what is the besy source for buying these?

Stealership quote:

Rear Pre cat $68.75
Front Pre Cat $74.25

Thank you in advance for your help.
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Unread 04-18-2013, 01:50 PM   #5
Unlimited04
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www.rockauto.com

NTK brand = stock
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Unread 04-18-2013, 02:51 PM   #6
SKINUM
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Quote:
Originally Posted by wage
does anyone have the following:

Part numbers for 02 sensors:
Front pre cat
rear pre cat

front post cat
rear post cat

also what is the besy source for buying these?

Stealership quote:

Rear pre cat $68.75
front pre cat $74.25

thank you in advance for your help.
23158, 23159, 23160, 23018 NTK, BOSCH, DENSO....stick with the NTK's due to others experiencing problems with other brands.

Look at Amazon & Rockauto. Amazon had better prices on 59 & 18 the last I checked & Rockauto was better on 58 & 60.
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Unread 04-18-2013, 03:12 PM   #7
timberwolf0122
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I bought an O2 sensor socket and it was a waste of money and awkward to use, in the end I used an adjustable wrench.
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