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Unread 02-14-2011, 01:42 PM   #31
biffgnar
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Quote:
Originally Posted by wgourley View Post
Well I already ordered them through the local Chrysler/jeep dealer. They had 2 in stock and had to order 2. The only distinguishing thing I have are the part numbers on the bag they’re in. the dealer told me the electrical connectors would be different but the 2 I have already are have the same connectors.
You should be able to do a lot better pricewise if you get online (e.g. www.moparpartsamerica.com) than local dealer. On my jeep there is some variation in the electrical plugs. Got an incorrectly numbered one once and plug didn't fit.

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Unread 03-10-2011, 12:17 AM   #32
NORCALROOTS
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Correction:

Pre Cat NTK #23151 (added an extra "1" in original post)
Post Cat NTK #23099

Quote:
Originally Posted by Jeeeps View Post
I'm going to replace my o2 sensors because i've been getting higher fuel usage lately plus the fact i've done 140,000klm with the factory ones. My only problem is which ones to go for. I've had a look around the web and come the conclusion that 1997-1999 TJ's have 2 o2 sensors which are:

Pre Cat NTK #231151
Post Cat NTK #23099

2000+ TJ's supposedly have 4x o2 sensors. 2000 TJ's sensor list:

Rear Pre-Cat upstream NTK #23506
Rear Post-Cat downstream NTK #23099
Front Pre-Cat upstream NTK # 23099
Front Post-Cat downstream # 23110

2001-2003 are listed as:

Front Pre-cat NTK #23139
Front Post-cat NTK #23142
Rear Pre-cat NTK #23138
Rear Post-cat NTK #23141

And then there's another 4 different part numbers for 2004+ TJ's.

My problem is than according to my VIN# mine's a 2002 (which makes sense seeing as i bought it new from the dealer in 2002) however i can only find 2x o2 sensors. I don't seem to have any little cat converters up near the headers that i know later models supposedly had. I can only find 2x sensors in the exhaust system located before and after the cat converter which is located down above the t-case bashplate.

Does this mean that i should go with the 97-99 model o2 sensors as those years appear to be the only ones in the US that only had 2x o2 sensors?

Has anyone else had this issue? Can anyone else with a 2002 TJ confirm that they've only got 2x o2 sensors or is my TJ a weird one? Mine was bought new in australia and is a right hand drive TJ. Perhaps because it's an export there is a difference?

cheers
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Unread 03-21-2011, 06:18 PM   #33
Knight-Rider
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I had a p0153 on the way home from work today. Phoned up the stealership. New sensor on the way, but wont be here for a couple of days. Am I alright till them, or should I have to find another way to get to work?
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Unread 03-22-2011, 01:39 PM   #34
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Quote:
Originally Posted by Knight-Rider
I had a p0153 on the way home from work today. Phoned up the stealership. New sensor on the way, but wont be here for a couple of days. Am I alright till them, or should I have to find another way to get to work?
Couple years ago I drove around for a lot longer than a couple days with that code. Didn't seem to cause any problems. Would think you will be fine.
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Unread 08-13-2011, 09:24 PM   #35
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awesome post - thanks solved my P0138 code and the information saved me a tonne of cash KUDOS!!! I truly appreciate the information
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Unread 08-30-2011, 10:36 AM   #36
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This has been very helpful i just ordered the part that i needed from the stealership. This forum has paid for itself many times over for me.
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Unread 10-26-2011, 11:08 AM   #37
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so what is the mopar part # for Bank1/Sensor 1(upper front) in an '05?
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Unread 10-26-2011, 11:19 AM   #38
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Quote:
Here are the 2005/2006 Mopar part numbers:

before - 56028995AB
before - 56028994AB
after - 56029049AA
after - 56029050AA
there you go
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Unread 11-13-2011, 12:25 PM   #39
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So question is there a trick to removing the last one? its pretty tight spot above the skidplate.
Tried soaking it with wd40 before i started and it budged but cant get it to turn much.
I got 7/8 box wrench should I just keep spraying it for a few days till it penetrates more?
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Unread 11-13-2011, 12:39 PM   #40
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Quote:
Originally Posted by luisi
So question is there a trick to removing the last one? its pretty tight spot above the skidplate.
Tried soaking it with wd40 before i started and it budged but cant get it to turn much.
I got 7/8 box wrench should I just keep spraying it for a few days till it penetrates more?
Take the skid plate off. Or unbolt the tranny from the skid plate (4bolts on bottom) and jack the tranny up to give you more room

Or, ditch the wrench and get an O2 socket and a breaker bar. I got a 24 inch breaker bar and it made the removal of all the O2s a breeze.

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Unread 11-13-2011, 04:02 PM   #41
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I just replaced mine and had the same trouble getting the old one out. I tapped the flat side of the sensor (bolt part) lightly with a small hammer for about thirty seconds. Once the metal cooled back down the sensor was easy to remove with a wrench. Good luck!
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Unread 11-13-2011, 04:11 PM   #42
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Quote:
Originally Posted by luisi View Post
So question is there a trick to removing the last one? its pretty tight spot above the skidplate.
Tried soaking it with wd40 before i started and it budged but cant get it to turn much.
I got 7/8 box wrench should I just keep spraying it for a few days till it penetrates more?
WD40 isn't a very good lubricant. It's a water displacing solvent. You need a good penetrating oil such as PB Blaster.
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Unread 11-13-2011, 05:41 PM   #43
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does any one know what size socket to use?

I have lots of old sockets on hand and was going to cut a slot in one of them
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Unread 11-13-2011, 05:49 PM   #44
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Originally Posted by bonza View Post
does any one know what size socket to use?

I have lots of old sockets on hand and was going to cut a slot in one of them


Is there an Oreilly auto nearby? You could rent at no cost the correct wrenches. It makes a lot easier.
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Unread 11-13-2011, 06:02 PM   #45
Jerry Bransford
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Wow, very nice information Axlexia, thanks for all the time and effort you put into it!!! I have made it a permanent part of the engine section in our FAQ at http://www.jeepforum.com/forum/f9/tj...2/#post5801951 for everyone's benefit for the future of JF.

Thank you again Alexia, that was very nice work that will be useful to a lot of Jeepers, me included!!!
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