Question about 1997 Jeep Grand Cherokee

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How to replace oxygen sensor

I need to replace the oxygen sensor on my 1997 jeep ...how do i do this

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They are located on the exhaust after the converter, their is a special tool for this and some parts stores will loan it to you. Soak with a good penatrating spray as they practically weld on the pipe threads from the heat of use.
I like to use a torch to heat and use the contraction and expansion to loosen the threads.

Posted on Jul 10, 2010

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Posted on Jan 02, 2017

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On a 07 jeep patriot where is the down stream 02 sensor fuse located?


Hi Daniel,here's a video showing you how to replace your oxygen sensors. 2008 Jeep Patriot O2 Sensor Replacement Here's a link to your sensors. Bosch Oxygen Sensor 15124 Read 1 Reviews on Bosch 15124 They are both the same.Here's a link to the other one which is the same part number. Bosch Oxygen Sensor 15124 Read 1 Reviews on Bosch 15124

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Code 21,43,and 42


You have two oxygen sensors but 21 is upstream sensor. This is the sensor between engine and catalytic converter. There is three possible problems that it could be.
1 oxygen sensor input voltage maintained above the normal operating range.
2 no signal at 02 2/1 sensor
3 oxygen sensor input voltage sustained above thenormal operating range. What all this means is you need to replace the sensor.
when getting the replacement this is your O2 2/1 sensor.

May 13, 2013 | 1996 Jeep Cherokee Country

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Checkengine codes 12 21 55


how do I replace an o2 sensor in a 1997 Jeep Cherokee ?

Mar 19, 2010 | 1997 Jeep Cherokee

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I've owned two 1997 Jeep Wranglers and eventually they both shared a common problem of rough idle, low fuel mileage, check engine light and and rough acceleration. Sometimes it would run fine but sometimes...


Hi,
This is a broad spectrum of possibilities. I would first start with a simple approach of insuring good gas.
When these symptoms occur, get a bottle of fuel additive and add to your tank. Possibly you have some condensation issues. This could be just the ticket... I hope so. Good luck.

Oct 23, 2009 | 1997 Jeep Wrangler

1 Answer

Engine light came on....code reads oxygen


does the jeep run rough and blow black smoke if so it will be the oxygen sensor if not i would try plugs and a air filter.

Sep 22, 2009 | 1997 Jeep Wrangler

1 Answer

$250 oxygen sensor parts only 2002 Jeep GC too much? needed?


YEP A BAD OXYGEN SENSOR WILL CAUSE ENGINE TO RUN RICH.CAUSING UNBURN FUEL TO GO TO THE CATALYTIC CONVERTER AND BURN IT OUT.

Aug 23, 2009 | 2002 Jeep Grand Cherokee

1 Answer

How do I change the oxygen sensor in my 1997 Jeep Wrangler


Unplug sensor cable from connector. Use 7/8" Oxygen Sensor socket, available at most auto supply and tool stores for around $10, to remove the sensor (It's a deep well with a slot cut up the side to clear the four wires that come out of the end of the sensor) . Insert new sensor using the same socket. The threads should have anti-seize compound already applied to them by the manufacturer. That is adequate. Plug the sensor connector into it's mate. That one is done. There are two Oxygen sensors on my '97 Wrangler. One is in the downpipe just after the connection to the exhaust manifold and the other is just after the catalytic converter. Easy to do!

Jun 16, 2009 | Jeep Wrangler Cars & Trucks

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1997 jeep cherokee-fuel injection problems


Try replacing the Oxygen Sensors... I had the same problem and replaced my Oxygen Sensors and I haven't had any problems since.

Jun 29, 2008 | 1997 Jeep Cherokee Country

2 Answers

Oxygen sensor wiring diagram


My 97 cherokee catalytic converter was stolen, oxygen sensor wires cut. the replacement is black, grey and white. the jeepicon1.png is different color. i need help knowing which wires get connected to which.

Jun 24, 2008 | 1997 Jeep Grand Cherokee

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