Oxygen Sensor Change 05-10 Grand Cherokee 3.7L
#1
Oxygen Sensor Change 05-10 Grand Cherokee 3.7L
I am in process of changing oxygen sensors on my 2006 Grand Cherokee. It's a Laredo 4x4 with the 3.7L engine and NAG1 transmission.
The two downstream sensors are a piece of cake to change out and they're done. The driver's side upstream sensor was difficult to unplug. I found that removing the wheel well gives better access. I have changed this sensor.
The passenger side upstream sensor is almost impossible. The engineers, in their infinite wisdom, decided to wedge the O2 connector in between the transmission bell housing and the transmission dipstick tube. it looks like the tube will need to be removed to get access to the plug.
To remove the dipstick tube there are two bolts. One is at the base of the transmission where the tube and seal are located. The other is one of the bell housing bolts that supports the tube. I can't figure out how the heck to unbolt the bell housing bolt, given the angle and the amount of room to turn a wrench. I would try unbolting it through the passenger wheel well but, conveniently, there is a small shroud covering the bolt from the side I am trying to loosen it from.
Has anyone else had experience changing these sensors on this model vehicle, or at least removing the dipstick tube?
The two downstream sensors are a piece of cake to change out and they're done. The driver's side upstream sensor was difficult to unplug. I found that removing the wheel well gives better access. I have changed this sensor.
The passenger side upstream sensor is almost impossible. The engineers, in their infinite wisdom, decided to wedge the O2 connector in between the transmission bell housing and the transmission dipstick tube. it looks like the tube will need to be removed to get access to the plug.
To remove the dipstick tube there are two bolts. One is at the base of the transmission where the tube and seal are located. The other is one of the bell housing bolts that supports the tube. I can't figure out how the heck to unbolt the bell housing bolt, given the angle and the amount of room to turn a wrench. I would try unbolting it through the passenger wheel well but, conveniently, there is a small shroud covering the bolt from the side I am trying to loosen it from.
Has anyone else had experience changing these sensors on this model vehicle, or at least removing the dipstick tube?
#2
02 sensors
I just found your post from 5 years ago as I am running into the same issue. I'm not even sure that the 02 sensors are what is causing my problem, but I've eliminated/replaced plugs, coil packs, and fuel issues and still getting a "random misfire" unspecified. That being said, I've decided to replace all four sensors in hopes that those are where my problem lies.
How did you end up accessing the "problem sensor"?
Thanks,
Ronny
How did you end up accessing the "problem sensor"?
Thanks,
Ronny
The following users liked this post:
Dabzapzz (03-21-2024)
#3
CF Veteran
Join Date: May 2012
Location: Lost in the wilds of Virginia
Posts: 7,964
Received 952 Likes
on
767 Posts
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Hi, Alec. Welcome to the forum.
Bad news - that post above was his last post. I don't think he's going to answer you. Here's a quick tip - If you right-click on a username, you can go to their profile, and there you'll see their last post listed. It can be helpful when looking up old threads.
I wish I could help you on your question. I don't have a V8 Grand, so I'm not much good to you. But maybe someone else will come along to assist.
Have you tried YouTube?
Bad news - that post above was his last post. I don't think he's going to answer you. Here's a quick tip - If you right-click on a username, you can go to their profile, and there you'll see their last post listed. It can be helpful when looking up old threads.
I wish I could help you on your question. I don't have a V8 Grand, so I'm not much good to you. But maybe someone else will come along to assist.
Have you tried YouTube?
#4
I just found your post from 5 years ago as I am running into the same issue. I'm not even sure that the 02 sensors are what is causing my problem, but I've eliminated/replaced plugs, coil packs, and fuel issues and still getting a "random misfire" unspecified. That being said, I've decided to replace all four sensors in hopes that those are where my problem lies.
How did you end up accessing the "problem sensor"?
Thanks,
Ronny
How did you end up accessing the "problem sensor"?
Thanks,
Ronny
#6
I just found your post from 5 years ago as I am running into the same issue. I'm not even sure that the 02 sensors are what is causing my problem, but I've eliminated/replaced plugs, coil packs, and fuel issues and still getting a "random misfire" unspecified. That being said, I've decided to replace all four sensors in hopes that those are where my problem lies.
How did you end up accessing the "problem sensor"?
Thanks,
Ronny
How did you end up accessing the "problem sensor"?
Thanks,
Ronny
Hey Alec found your reply on a post from 3 years ago hopefully you respond haha. I seen you have a misfiring problem I was wondering if you got that fixed and if so what was the cause
Thread
Thread Starter
Forum
Replies
Last Post
pwb
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
10
09-26-2013 07:05 PM
vt jeepster
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
02-06-2013 01:24 AM
t-amos
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
03-02-2010 04:06 PM
Jeepster120
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
02-27-2008 09:55 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)