NAS 110 - The Signal Conditioner - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old May 13th, 2014, 05:50 PM
Daniel1's Avatar
Daniel1
Status: Offline
Daniel
1984 D110
Member
 
Join Date: Nov 2013
Location: Northeast
Posts: 278
NAS 110 - The Signal Conditioner

Found this under my dash. Has any NAS 110 owner removed this conditioner for an accurate reading?

"The Signal Conditioner: (1993 NAS 110 only)

The engine temperature gauge in your 1993 NAS Defender 110 is not telling you the truth. This is important because most Rover V8s will last a good long time, unless they develop coolant or overheating issues, so you need to know your coolant temperature and keep an eye on it. Behind the dash of every NAS Defender 110 is what is called a "signal conditioner" or "stabilizer." It is Land Rover part #AMR2401."1

1. http://www.eastcoastrover.com/signalconditioner.html
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old May 13th, 2014, 06:46 PM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
I did, but I have not run the truck since. I bought a 94 NAS temp gauge to swap in as supposedly that is required too. I need to get the temp sensor too, but that can wait for a while.
__________________
*not legal advice*
Reply With Quote
  #3  
Old May 13th, 2014, 07:18 PM
61rover's Avatar
61rover
Status: Offline
John Crouse
'93 NAS D110 (#8) / '61 Series II
Member
 
Join Date: Feb 2007
Location: Denver, CO
Posts: 1,116
Registry
Many folks just replace with a VDO guage and sender that shows the actual temp.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old May 13th, 2014, 07:22 PM
rd10014's Avatar
rd10014
Status: Offline
Ronnie
1993 NAS D110
Member
 
Join Date: Mar 2012
Location: NYC
Posts: 923
Registry
Quote:
Originally Posted by Daniel1 View Post
Found this under my dash. Has any NAS 110 owner removed this conditioner for an accurate reading?

"The Signal Conditioner: (1993 NAS 110 only)

The engine temperature gauge in your 1993 NAS Defender 110 is not telling you the truth. This is important because most Rover V8s will last a good long time, unless they develop coolant or overheating issues, so you need to know your coolant temperature and keep an eye on it. Behind the dash of every NAS Defender 110 is what is called a "signal conditioner" or "stabilizer." It is Land Rover part #AMR2401."1

1. http://www.eastcoastrover.com/signalconditioner.html
You can take a temp reading with an infrared temp gauge (i have one). I was going to change unit I checked the temp, mine ended up being fine, this miss temp reading doesn't follow suit with all NAS 110s. Called RN and they basically said check the temp and if its fine leave it.
Reply With Quote
  #5  
Old May 13th, 2014, 07:30 PM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Quote:
Originally Posted by rd10014 View Post
You can take a temp reading with an infrared temp gauge (i have one). I was going to change unit I checked the temp, mine ended up being fine, this miss temp reading doesn't follow suit with all NAS 110s. Called RN and they basically said check the temp and if its fine leave it.
So you actually overheated it? As I understand the issue, it reads a normal temp both when normal and when overheating.
__________________
*not legal advice*
Reply With Quote
  #6  
Old May 13th, 2014, 07:33 PM
rd10014's Avatar
rd10014
Status: Offline
Ronnie
1993 NAS D110
Member
 
Join Date: Mar 2012
Location: NYC
Posts: 923
Registry
Quote:
Originally Posted by evilfij View Post
So you actually overheated it? As I understand the issue, it reads a normal temp both when normal and when overheating.
No, I read the ECR rover thread and was going to change it over for percautionary measures but decided to use an infrared temp gauge and the temp was fine and coincided with the gage.
Reply With Quote
  #7  
Old May 14th, 2014, 12:09 AM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Quote:
Originally Posted by rd10014 View Post
No, I read the ECR rover thread and was going to change it over for percautionary measures but decided to use an infrared temp gauge and the temp was fine and coincided with the gage.
Right, but that is not the problem. The gauge reads fine (correctly) when it is normal temp. It also reads fine when it is overheating. You can't tell because of the conditioner.
__________________
*not legal advice*
Reply With Quote
  #8  
Old May 14th, 2014, 09:43 AM
leastonce's Avatar
leastonce
Status: Offline
Jason England
D-90 White 95 SW #65
Site Team
 
Join Date: Jul 2009
Location: NYC
Posts: 6,078
Registry
Basically it always says the temp is normal ... Even when it's boiling over, seizing the bores and warping heads.

Of all the things in a v8 defender a lying temp gauge is not what you need.
__________________
Quote:
Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
Car Camping Collective founding member and Chief Executive Officer
Cat Camping Collective founding member and Chief Executive Officer
Reply With Quote
  #9  
Old May 14th, 2014, 10:07 AM
Daniel1's Avatar
Daniel1
Status: Offline
Daniel
1984 D110
Member
 
Join Date: Nov 2013
Location: Northeast
Posts: 278
Anyone know why the gauge needs to be swapped out for the system to be accurate? It looks like the wires are just bypassed through the conditioner.


Quote:
Originally Posted by 61rover View Post
Many folks just replace with a VDO guage and sender that shows the actual temp.
Do you know the VDO part #?


Quote:
Originally Posted by rd10014 View Post
You can take a temp reading with an infrared temp gauge (i have one). I was going to change unit I checked the temp, mine ended up being fine, this miss temp reading doesn't follow suit with all NAS 110s. Called RN and they basically said check the temp and if its fine leave it.
RD - Let me borrow that infrared temp gun to see hwo accurate my gauge is.

Nevertheless even if the current temp gauge equals the actual temp which reads normal, something could go Defender down the road and the temp gauge will "say the temp is normal ... Even when it's boiling over, seizing the bores and warping heads. "...
Reply With Quote
  #10  
Old May 14th, 2014, 10:25 AM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
I understand the correct gauge to be the 94/95 NAS gauge.
__________________
*not legal advice*
Reply With Quote
  #11  
Old May 14th, 2014, 11:47 AM
61rover's Avatar
61rover
Status: Offline
John Crouse
'93 NAS D110 (#8) / '61 Series II
Member
 
Join Date: Feb 2007
Location: Denver, CO
Posts: 1,116
Registry
All the info on the VDO swap is in here: http://www.defendersource.com/forum/...eferrerid=2895


It's a 20 minute job and you get actual temp instead of "Hot" and "Way too Hot" from the factory setup.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
110, nas, nas 110, signal

Thread Tools

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wtb: Air Conditioner complete kit for 1999 defender 110 TD5 Crayfish Wanted 3 August 17th, 2013 07:08 PM
Air-conditioner box doesn't drain properly in my 97 NAS rd10014 Series Technical Discussions 1 June 28th, 2013 12:46 PM
NAS 110 temp gauge update to remove signal conditioner evilfij Defender Technical Discussions 50 September 4th, 2010 05:42 PM
Air Conditioner Vents on NAS 110 - How to hold direction of flow? COSteve Defender Technical Discussions 5 July 15th, 2004 11:11 AM
12 VDC Air Conditioner RyanS Defender Technical Discussions 0 May 17th, 2004 04:26 PM


All times are GMT -5. The time now is 05:29 PM.


Copyright