The O2 Sensor Thread - DiscoWeb Message Boards
DiscoWeb Message Boards
 

Go Back   DiscoWeb Message Boards > DiscoWeb Technical Boards > Discovery - Technical Discussions

Reply
 
Thread Tools Display Modes
Old 03-04-2016, 11:05 AM   #1
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default The O2 Sensor Thread

Since O2 sensor info is scattered all over the place maybe it would be good to get most of the info in one place. I'll kick it off.

1) The 25044 NTK sensor listed in most parts sources has the wrong plug for my '97 D1.

Question:
I made a monitor panel for my O2 sensors in Torque. They are number 1x1, 1x2, 2x1,2x2. I assume 1 is the odd cylinder side and 2 is the even? Which is front vs rear?
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Old 03-04-2016, 03:23 PM   #2
fishEH
Member
 
fishEH's Avatar
 
Join Date: Jan 2009
Location: Lake Villa, IL
Posts: 5,786
Default Re: The O2 Sensor Thread

Quote:
Originally Posted by Injuhneer View Post
Since O2 sensor info is scattered all over the place maybe it would be good to get most of the info in one place. I'll kick it off.

1) The 25044 NTK sensor listed in most parts sources has the wrong plug for my '97 D1.

Question:
I made a monitor panel for my O2 sensors in Torque. They are number 1x1, 1x2, 2x1,2x2. I assume 1 is the odd cylinder side and 2 is the even? Which is front vs rear?

You can solder on the correct plug, the sensor is the same. No butt splice connectors, has to be a good solder joint.

As you're sitting in the truck I'm pretty darn sure these are the positions of the sensors.
1x1 1x2


2x1 2x2
__________________
'98 D1 Trail Rig. Lockers and whatnot. Retired
'96 D1 Daily Driver. OME lift, 235/85/16 Toyo AT's.
'95 D1 Project Truck.
'94 D1 Too good to pass up. OME lift, 265/75/16 BFG AT's, Detroit/TruTrac, etc

Quote:
Originally Posted by discostew View Post
No matter how hard you stir it you won't make chocolate ice cream out of a bucket of shit
fishEH is online now   Reply With Quote
Old 03-05-2016, 09:17 AM   #3
mbrummal
Member
 
mbrummal's Avatar
 
Join Date: Jan 2009
Location: Montgomery, AL
Posts: 2,806
Member Trucks
Default Re: The O2 Sensor Thread

1x1 is the drivers side pre-cat. 2x1 is the passenger side pre-cat.
1x2 is the drivers side post-cat. 2x2 is the passenger side post-cat.
__________________
Mason
'00 DII

If BS was money he'd be a billionaire. -jhmover

mbrummal is offline   Reply With Quote
Old 03-05-2016, 10:09 AM   #4
Buddy
Member
 
Buddy's Avatar
 
Join Date: Nov 2006
Location: Central NC
Posts: 2,786
Member Trucks
Default Re: The O2 Sensor Thread

Quote:
Originally Posted by mbrummal View Post
1x1 is the drivers side pre-cat. 2x1 is the passenger side pre-cat.
1x2 is the drivers side post-cat. 2x2 is the passenger side post-cat.
This is how I remember it also.

As Brett mentioned you can definitely solder on the connectors to the O-2 sensors. I've had pretty good results with this.

One other thing to note is that the '96 DI's actually have a different connector from the '97 and later DI's. I'm pretty sure the sensors are the same but the connects are different. At least I've been able to swap the connectors and have them work. For the GEMS engines I'm not sure the connector swap is really worth it anymore. The last few O2 sensors I got were around $80 at Advance Auto parts for the correct ones.

Another thing to note is that the 14CUX trucks use different O2 sensors from the GEMS trucks. They use a 3 wire titania type O-2 sensor. While the GEMS use a 4 wire sensor (I'm not sure if the GEMS uses a zirconia or titania sensor however). So these are not interchangeable. There is a pretty cheap alternative for these sensors though. You can use the Bosch 13021 sensor. Which I believe is used in a mid to late '80 Sentra. Again this will require swapping connectors. I'm currently running two of these in my '95. I got them for around $40-$45 each, and they seem to be working well according to the Rover Gauge.
__________________
'97 DI, with lots of stuff now an Organ Donor
'95 DI, future dedicated trail truck. Just getting started
'95 DI Chop Top.

Quote:
Originally Posted by D Chapman
Bigger is better.
#nobypasses
Buddy is offline   Reply With Quote
Old 03-16-2016, 10:57 AM   #5
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default Re: The O2 Sensor Thread

I did connect the '97 plug to the 25044 sensor. Unfortunately I can't tell if it works because the ECM shows no change but that is a different issue.
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Old 03-16-2016, 10:58 AM   #6
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default Re: The O2 Sensor Thread

So this 25044 sensor can be adapted to any of the 4 positions?
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Old 03-16-2016, 12:33 PM   #7
WaltNYC
Member
 
WaltNYC's Avatar
 
Join Date: Mar 2010
Location: NYC
Posts: 228
Default Re: The O2 Sensor Thread

Mike, is your '97 PRE-AEL or does it have the AEL system? That makes a difference. The 25044's are for AEL trucks. They made the change somewhere in the middle of 1997.
__________________
1997 Discovery I SE - 138k miles

Get all the RAVE manuals here....
https://www.cubbyusercontent.com/pl/...kshop%20manual

Discovery I exploded parts diagrams....
http://www.allbrit.de/NAV.cfm?SPRACHE=EN&PAGE=491338
WaltNYC is offline   Reply With Quote
Old 03-25-2016, 11:05 AM   #8
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default Re: The O2 Sensor Thread

What are the defining differences in the components to determine which I have? Is there a VIN start number for AEL?
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Old 04-19-2017, 11:30 AM   #9
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default Re: The O2 Sensor Thread

My '97 is pre-AEL I believe. Round evap canister in the engine bay? Some other telltale?
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Old 04-20-2017, 09:19 AM   #10
WaltNYC
Member
 
WaltNYC's Avatar
 
Join Date: Mar 2010
Location: NYC
Posts: 228
Default Re: The O2 Sensor Thread

Round canister is pre-AEL. Square is AEL.

https://landroverforums.com/forum/di...02/#post567770
__________________
1997 Discovery I SE - 138k miles

Get all the RAVE manuals here....
https://www.cubbyusercontent.com/pl/...kshop%20manual

Discovery I exploded parts diagrams....
http://www.allbrit.de/NAV.cfm?SPRACHE=EN&PAGE=491338
WaltNYC is offline   Reply With Quote
Old 04-21-2017, 12:45 AM   #11
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default Re: The O2 Sensor Thread

Quote:
Originally Posted by WaltNYC View Post
Round canister is pre-AEL. Square is AEL.

https://landroverforums.com/forum/di...02/#post567770
Pre-AEL it is then. Is there a definitive cross reference to a sensor for the Pre-AEL? Earlier it was mentioned that they may be the same except for connector.
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Old 04-21-2017, 12:49 AM   #12
Injuhneer
Member
 
Injuhneer's Avatar
 
Join Date: Nov 2011
Location: Southeastern Arizona (near Tombstone)
Posts: 370
Member Trucks
Default Re: The O2 Sensor Thread

Quote:
Originally Posted by WaltNYC View Post
Mike, is your '97 PRE-AEL or does it have the AEL system? That makes a difference. The 25044's are for AEL trucks. They made the change somewhere in the middle of 1997.
Mine are all 4-wire but it is pre-AEL.
__________________
./----\˛
|―-|―\--,
́́́́ '-O----O˚
__Лˉ\_Дˉ\__
-< Mike O. >-
'97 Disco I SE V8i - No major mods
1971 Honda ST90: 160cc stroker with CT90 Hi/Lo



Injuhneer is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

» Log in
User Name Not a member yet?
Register Now!
Password
» Today's Birthdays
janfloris (37)
Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 01:28 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2000 - 2015, DiscoWeb.org. All rights reserved.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.