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Unread 03-14-2003, 12:17 PM   #1
WestTexasJGC96
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O2 Sensors - 96 JGC 5.2L

I have recently got error code PO133 - O2 sensor ckt slow response (Bank 1, Sensor 1.) And my jeep has been running fair except it seems to be misfiring abit. What is my problem? My guess is I could change out the O2 sensors and changes plug and wires and the problem would be taken care of. How many O2 sensors does my JGC (146k miles) have and where are they located? How difficult are they to change and what tools are required? Based on what I have read is they are difficult to get to and you need a 7/8" O2 Sensor socket. Am I on the right track or way off base?

Thanks for any assistance.

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Unread 03-14-2003, 08:08 PM   #2
automan25
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It is the typical recommendation that you replace your oxygen sensor(s) after 100,000 miles. If I'm not mistaken yours has 2...one just in front of the Cat convertor, and one behind. The system uses two as a way to determine if the cat has gone bad or not. I don't think they are too difficult to replace, I intend on replacing mine in the next few weeks, so I'll let you know. I found them for around 50 bucks each at the local auto parts shop.
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Unread 03-14-2003, 10:37 PM   #3
Black96ZJ
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WestTexasJGC96 is correct, more specific: One of the sensors screws into the cat, from the drivers side, and the other one is just after where the exhaust manifolds go into the exhaust pipe. They are both fairly easy, although the plug for the wires is difficult on the one after the manifolds.

Also, where did you find O2 sensors for 50 a piece......I paid 72 each for mine, and that was the cheapest i found (napa).

- Daniel
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Unread 03-15-2003, 01:46 AM   #4
automan25
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Shuck's Auto Supply...it might be Cragen or Checkers where you live...you can also go to CSKAuto.com. NAPA also had it online for about the same price. My Jeep is a '93 however, so mabey it uses a different design.
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1993 ZJ Limited 5.2 - no mods - Red with Gold (what were they thinking) trim.
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Unread 03-15-2003, 10:12 AM   #5
WestTexasJGC96
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I've located both of the sensors but, haven't figured out how to get to the plug on the front one. I called Autozone yesterday and they quoted me $49.99/each - Bosch.

Thanks for all the help - I'm going to change both of them out early this coming week. I'll let you all know how it goes - and any helpful tips.
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Unread 03-18-2003, 10:30 AM   #6
97RedBird
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I just got one for my 96 and Autozone gave me one for 48.99, but when I looked at the connector it wasn't right. They ordered in a 1997 o2 sensor for $76. Look at the connector there could be more 96's with 97 style o2 sensors.

Also 96 o2 on the cat is not to bad to replace.
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Unread 03-18-2003, 05:17 PM   #7
WestTexasJGC96
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Thanks for all the help. My advice to someone going to change out their O2 Sensors on a 96 JGC, use a 22m open-end wrench not the Oxygen Sensor socket or Oxygen Sensor crow-foot (the reason I had a problem with both is because they are make for 7/8" and not 22mm which made me round off the back sensor because it was tight and the socket's were just a hair to large i.e. 7/8" instead of 22 mm.) Get ready to search for the correct sensors, on my Jeep the front sensor - OEM #56027917 -> Bosch #15705 and/or ? #15274; and back or on back side of cat - OEM #56041006 -> Bosch doesn't make a replacement (or atleast that is the result of my adventures to Checkers/ORielly's and AutoZone.)
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Unread 03-19-2003, 12:26 PM   #8
97RedBird
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I'll try to get the bosch number of the closest match that works for mine. like I said it was for 97, but other than part of the guide on the connecter being a hair off they are identical connectors. Just shave a piece off the connector and slip it on.
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Unread 03-21-2003, 07:45 AM   #9
97RedBird
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The o2 sensor on the cat that worked for me was Bosch # 13399. O'reilys said it was for a 1997 Jeep GC, so mine must have been a late late 1996 model to get that o2 sensor.

Last edited by 97RedBird; 03-24-2003 at 08:31 AM..
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