4th Generation Maxima (1995-1999) Visit the 4th Generation forum to ask specific questions or find out more about the 4th Generation Maxima.

What is this and how do I remove it?

Old 04-15-2018, 01:21 PM
  #1  
Newbie - Just Registered
Thread Starter
 
Join Date: Oct 2017
Posts: 3
What is this and how do I remove it?

Hi. so my first ever car project at 45 years old is the passenger axel and upper oil pan on my daughter's first car. The CV boot is gone, and the upper oil pan is leaking like a manic.

I've found most of the info so far on this great site, but not sure about the item pictured. I'm removing the Y pipe exahust and have actually managed to get the six nuts mostly off, but I can't remove them until I disconnect the pictured part. There is not enough extra wire and I don't want to break this thing.

Thanks for your help on this!
Steveholtam is offline  
Old 04-15-2018, 03:22 PM
  #2  
Senior Member
iTrader: (2)
 
Join Date: Apr 2004
Location: Plano, TX
Posts: 10,377
I can't view your photo. I don't know if anyone else is having the same difficulty that I am.

Since I can't see the photo, I'm going to take a wild guess that the item in question is screwed into the y-pipe. If so, it is probably an O2 (oxygen) sensor. They can become very corroded and super hard to remove. You could trace the wires up to where it plugs in and just remove it wires and all.

Also, please tell us what year the car is. There are small differences from year to year and for some jobs it makes a difference.
DennisMik is offline  
Old 04-15-2018, 03:36 PM
  #3  
Newbie - Just Registered
Thread Starter
 
Join Date: Oct 2017
Posts: 3
Oh yeah, the mobile view does not show the picture. But it sounds like that I am looking at the O2 sensor. I tried following the wires up, but loose them. Lol. I think up against the exhaust I see where I might be able to use a wrench to remove it. Is that correct?

The car is a 1998 Infinity I30.
Steveholtam is offline  
Old 04-15-2018, 03:52 PM
  #4  
I'm nutty for Nissans
iTrader: (46)
 
JSutter's Avatar
 
Join Date: Feb 2003
Location: Portland, Maine
Posts: 9,388
The O2 sensor on the fire wall side has plug right next to cylinder 1 coil pack. It's on the intake plenum near the wiper motor.
JSutter is online now  
Old 04-16-2018, 04:35 AM
  #5  
Senior Member
iTrader: (2)
 
Join Date: Dec 2000
Location: Tampa Bay
Posts: 1,958
Yes... that's an oxygen sensor and it threads in and out of the exhaust system.

Your best bet is an O2 sensor removal socket. I've found, based on the positioning of our sensors, that the off-set tool works better.

https://shop.advanceautoparts.com/p/...et+-+o2+sensor
Turbobink is offline  
Old 04-16-2018, 12:00 PM
  #6  
Newbie - Just Registered
Thread Starter
 
Join Date: Oct 2017
Posts: 3
That tool does look like it would make the job easy. After the help here identifying the O2 sensor, I saw a youtube video that showed it is a 7/8 wrench, and also where the wires end up at. So thanks everyone.

I'm going to try to remove it from exhaust first, and if that fails, I'll undo it from up above. So far I've had no issues with the other "tough" bolts, so maybe this will be easy as well. Well, two of the three nuts on the back Y-Pipe were tricky. But luckily I had bought a wobble extension kit and the two smallest together wobbled right into place. Without them, I can see how much trouble that would have been.

As I get deeper I might have more questions!

Steve
Steveholtam is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mahanddeem
5th Generation Maxima (2000-2003)
9
09-16-2011 07:51 AM
jr vq 30 de
4th Generation Maxima (1995-1999)
11
03-23-2007 02:21 PM
MOHFpro90
Detailing
5
01-25-2007 11:19 AM
MyownNismo
5th Generation Maxima (2000-2003)
0
06-15-2004 09:44 AM
rwatt1981
4th Generation Maxima (1995-1999)
0
02-21-2004 08:43 PM


Thread Tools
Search this Thread
Quick Reply: What is this and how do I remove it?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.