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Old 04-13-2013, 12:39 PM   #61
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Quote:
Originally Posted by homiegx
Yes bank 1 sensor 2 is one I'm trying to replace but the wrench won't slide on the sensor with the space that is available to turn the wrench between the skid plate and the muffler
The most effective tool is going to be an O2 sensor socket. A wrench may work in certain case but an O2 sensor socket grabs on more sides of the sensor providing better torque and less chance of stripping the sensor.
If you have heard of any that have bent, they were of incredible poor quality. It may be cheaper in the long run to buy a quality O2 sensor socket. If you damage the sensor you may need to being it to a shop so they can get it out for you. Plus if you have it and have another sensor crap out on you, you're set.
I'd let you borrow one of mine if you lived close by.

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Old 04-13-2013, 03:12 PM   #62
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I went and got the socket. Came off easy with it. Old one def looked spent.

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Old 06-23-2013, 01:14 PM   #63
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Ready to change downstram o2 sensor, but it's too tight 0.o

Quote:
Originally Posted by KingTJ View Post
Well from what I've researched, NGK was subcontracted to manufacture factory o2 sensors for my year (2000) and so on. Therefore, anything bought from rockauto being "NTK" is NGK's brand and will be exact OEM replacements.
Quote:
Originally Posted by HarryJeepGuy View Post
From what I've read, Dealer parts are best, anything but Bosch. I wouldn't hesitate to use NGK.

Hey thanks a lot for your helps guys, I changed my o2 sensor, just need the downstream one now.
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Old 07-15-2013, 03:45 PM   #64
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OK, been following these threads replaced my 02 sensor, bank on, sensor 2 per the PO138 code according to the diagram above. The Check engine light went out, it does seem to be running better, but still feels like running on 5.5 cylinders. This is a new 4.0 crate engine in a 2000 TJ. Without a CE light I'm not pulling any codes, so I'm wondering if it just needs miles to clear up, or how to find whats causing the continued problem
Thanks
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Old 07-20-2013, 01:04 PM   #65
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Quote:
Originally Posted by Under the Palms View Post
OK, been following these threads replaced my 02 sensor, bank on, sensor 2 per the PO138 code according to the diagram above. The Check engine light went out, it does seem to be running better, but still feels like running on 5.5 cylinders. This is a new 4.0 crate engine in a 2000 TJ. Without a CE light I'm not pulling any codes, so I'm wondering if it just needs miles to clear up, or how to find whats causing the continued problem
Thanks
Have your tried tunning your jeep up???
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Old 09-26-2013, 02:25 PM   #66
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is the o2 sensor bank 1 sensor 1 an upstream?
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Old 09-26-2013, 02:26 PM   #67
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Quote:
Originally Posted by csala027 View Post
is the o2 sensor bank 1 sensor 1 an upstream?

yes
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Old 09-26-2013, 02:29 PM   #68
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Know a cheap place to buy the part? Rock auto is 22 and AutoZone is 40.
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Old 09-26-2013, 02:32 PM   #69
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rockauto is the cheapest, price sounds off though!! Make sure that you use the NTK brand or you will experience problems. I have a thread that was moved to the general discussion area that has a discount code for rockauto.

Rock auto discount code
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Old 09-26-2013, 02:42 PM   #70
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It's 25 for the ntk brand do I need to buy a socket as well?
Also I can afford to install 1 o2 sensor and my jeep is a v6 is that ok? Or do I need to change our both sensors?
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Old 09-26-2013, 02:44 PM   #71
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If only one is bad that is fine. you do not need the socket. I personally think they are a huge waste of money.
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Old 09-26-2013, 02:48 PM   #72
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May I ask why? Sorry I'm new, trying to learn everything I can.
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Old 09-26-2013, 02:55 PM   #73
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Quote:
Originally Posted by csala027 View Post
May I ask why? Sorry I'm new, trying to learn everything I can.

why what? the socket? it can be done with a 7/8 wrench and no need for it.
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Old 09-26-2013, 04:11 PM   #74
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Oh ok, well thank you , you saved me about 30 bucks. I can buy the part for 25 bucks and a guy said for 50 he can install it for me
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Old 05-08-2014, 10:07 AM   #75
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p0132 p0138 & P0121

Went through the answers. Still having problems.

The problem started with my 2000 TJ 4.0 (German model) running rough sometimes when warmed up.
Received p0138 and p0132. Replaces both O2 sensors by Bosch universal parts.
Problem still there. A mechanics in FL recommended to change the TPS. After I changed it I also got a P0121. First I thought the part might be broken. Changed it a second time P0121 still there. With the old TPS I still get P0138 and 0132 but no P0121.
The problem of running rough got worse with the new TPS.
Now we will go into the wiring. Any recommendations?
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Old 08-21-2014, 06:29 PM   #76
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Just replaced oxigen sensor, less than 24 hours ago, check engine light is on again
Sahara 2doors 2007, did I miss a step? What else could be wrong?
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Old 09-17-2014, 07:57 PM   #77
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OK Newbie here, got my first Jeep this week. 03 Wrangler X with 59K miles and beautiful shape. Drove it home from Akron and ran like a champ for 2 hours. Wife got in for test drive and came back with engine light on. P0138 code. The only thing I did was check the fluids and air filter since the car is new to me, before she drove it. Thought I might have not put the filter back in correct, but didn't seem to be the case. Cleared the code by pulling battery cable, came on again after about 45 minutes driving. Thoughts? As when I test drove for a half hour before I purchased and for the 2 hours on the way home nothing. Anything obvious before I start switching out O2 sensors?
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Old 09-25-2014, 05:02 PM   #78
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I just had codes checked and got the P0132. This was after being on the highway at constant 65mph and the jeep basically died/stalled. I limped it to the side of the road and when flooring the throttle it ran but without WOT it would sputter and die. It starts fine and drives fine in the city. Auto Zone says it's likely the PCM; but I want to see if changing the O2 sensors first will clean it up. It also sometimes sputters a bit when accelerating when it's cold in the morning. Any insight?
Thanks,
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Old 09-25-2014, 05:08 PM   #79
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Dunno if this is a stupid question but where can I find if my jeep was manufactured in Cali, I have an 06 sport.
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Old 10-15-2014, 12:05 PM   #80
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Quote:
Originally Posted by GeorgiaTJ06 View Post
Dunno if this is a stupid question but where can I find if my jeep was manufactured in Cali, I have an 06 sport.
If you carfax it, usually says place of original sale. Vin can tell you place it was built but I don't know if it has a code for cali emissions
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Old 02-27-2015, 01:01 PM   #81
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P0138 code

Ok, I have been reading these threads for a few hours and most of them are close to what issues I have but this is mine.......
I have a 2001 wrangler with a 2.5 liter and 128,000 miles.
I was driving home from work in a snow storm and my check engine light came on. I noticed that it started to spit and sputter a little. I drove a couple of miles more and then it died. I towed it home and have it sitting next to my barn. I found that I have a crack in my exhaust manifold, wich is not really uncommon and I planned to get it replaced this spring. I put in a new exhaust system a few weeks back but it ran fine after. I got the P0138 code and found that it could be the O2 sensor high voltage. My question is....Is the O2 sensor failure the reason why it died? Could the crack in the exhaust manifold be part of the reason? I think I need to check the fuses and relays next. But I never thought it would die like that and not want to start again.
PLEASE HELP!!

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Old 02-27-2015, 01:19 PM   #82
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A car *shouldn't* typically cut off with a bad O2 sensor. O2 sensor failure should make the car default to a rich fuel map and send your gas mileage to the dump.

You also didn't post (and I don't remember if the model year applies) but a sensor past the catalytic converter is there simply to monitor the condition of the converter and will have no effort whatsoever on engine operation.
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Old 10-27-2015, 05:04 PM   #83
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I replaced my cats and all 4 o2 sensors on a 2008 wrangler with 122k miles and i still can't get the engine light to go off. Went to a local garage and thet tell me one o2 sensor on the upper drivers and one o2 sensor lower on the passanger side are bad. Had them both replaced and still my service engine light is on. Any thoughts? Mpg stay at about 15.5
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Old 10-27-2015, 06:19 PM   #84
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Ok,
Hopefully somebody will double check my work and tell me I got this right.
If I did, hopefully this will help someone else too!

1. Wanted to know if I had the Cali model and was lazy.
Followed the instructions in this thread and downloaded my build sheet.

You know that feeling when...

2. Build sheet stated the following:
Build To U.S. Mkt. Specifications - obviously
U.S. Dealer Retail - obviously
Zone 71-Los Angeles - Crap, Cali build
Washington Ship to State Code - Wait! maybe it's not!
Washington Sold to State Code - Wait! maybe it's not!
50 State Emissions - Crap!! Cali build
Federal Tier 2, Bin 9A Emissions - huh??

3. Crawled underneath. It's a Cali Build.
Not sure which of the items in the build sheet was the nail in the coffin.
Assuming it was the "50 State Emissions"

4. Went looking for them. Found all four. See image.

5. (Here is where I need my work double checked)
One = Upstream Cyls. 1-3 : NTK 23018
two = Downstream Cyls. 1-3 : NTK 23159
three = Upstream Cyls. 4-6 : NTK 23160
four = Downstream Cyls. 4-6 : NTK 23158

(Note: all descriptions and part #s are from Rock Auto)

Please tell me I got this right!

Thanks!
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Old 10-27-2015, 06:28 PM   #85
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Didn't mean to post over JoeyV.

Note that he posted his question today (10/27/2015) if someone can help him out.

This thread goes back years. Didnt want his question to get overlooked!!
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Old 10-27-2015, 07:04 PM   #86
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JoeyV.
This video claims to show you how to test the O2 sensor.

Dont know how reliable this is.

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Old 10-27-2015, 08:55 PM   #87
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Quote:
Originally Posted by dr_donahue View Post
So I just wanted to inform my fellow jeep members that I recently fixed my O2 sensor problem (
Good to know: My jeep is coming up on 100K so I may needs this in the near future. I'm only commenting so when it does happen, I can go back and look at my posts and find this thread again.

Thanks for sharing!
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Old 10-29-2015, 03:40 PM   #88
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Well, nobody confirmed but I went ahead and ordered all 4 O2 sensors.

Will follow up as soon as I get them installed.

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