XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

ECU investigation-

Thread Tools
 
Search this Thread
 
Old May 4, 2022 | 11:49 AM
  #1  
seacat's Avatar
Thread Starter
|
Junior Member
Joined: Jan 2022
Posts: 22
Likes: 5
From: Pacific Grove
Default ECU investigation-

Hello fellow members,
In my attempt to pass CA smog...I would like some help decoding these two ECU units. The first one is currently in my 1996 XJS 4.0 6cyl as a temporary loaner from my mechanic. The second image is the ECU unit that was in the vehicle when I purchased it 3 months ago. My mechanic clams the original one was burned out by high amp surges from an aftermarket alternator installed by the previous owner. I just want to know what these ECU units came out of originally. Meanwhile, I am trying to purchase a functional ECU from the 1996 XJS 4.0 6 cyl

thank you for any decoding you can help with!!




 
Reply
Old May 4, 2022 | 12:45 PM
  #2  
Spikepaga's Avatar
Veteran Member
Joined: Apr 2011
Posts: 2,991
Likes: 567
From: Houston, Texas
Default

Originally Posted by seacat
Hello fellow members,
In my attempt to pass CA smog...I would like some help decoding these two ECU units. The first one is currently in my 1996 XJS 4.0 6cyl as a temporary loaner from my mechanic. The second image is the ECU unit that was in the vehicle when I purchased it 3 months ago. My mechanic clams the original one was burned out by high amp surges from an aftermarket alternator installed by the previous owner. I just want to know what these ECU units came out of originally. Meanwhile, I am trying to purchase a functional ECU from the 1996 XJS 4.0 6 cyl

thank you for any decoding you can help with!!



hi there. I send a Pm
 
Reply
Old May 4, 2022 | 03:55 PM
  #3  
Spikepaga's Avatar
Veteran Member
Joined: Apr 2011
Posts: 2,991
Likes: 567
From: Houston, Texas
Default

OP , I send a private message, but in case you missed it, I do have a ECU for a 96. A while back my ECU suffered from water ingress, as so many 94-96 ECUs do, and I got a few replacements. It has been several years since I replaced my bad ECU, and I made it water-tight, with lots of ECU connector grease and other precautions. I have had no further problems, so I may be willing to part with one of my back ups. This is what I have: it was tested and worked perfectly on my 1995 although production date says 12/02/1995



 
Reply
Old May 4, 2022 | 06:21 PM
  #4  
Jagboi64's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2013
Posts: 5,250
Likes: 3,509
From: Calgary, Canada
Default

Another thought is you might contact XJR Engineer on the X300 list. He designed the ignition system of the 1995-97 XJ6 and XJR sedans and is able to reprogram these ECU's. He may be able to test and reprogram it for you, it's worth an inquiry.

His profile: https://www.jaguarforums.com/forum/m...gineer-113530/
 
Reply
Old May 5, 2022 | 02:21 PM
  #5  
Gijzzy's Avatar
Senior Member
10 Year Member
Liked
Joined: Nov 2011
Posts: 121
Likes: 36
From: The Netherlands
Default

Details I could find:
LNB1410FC:
X300
4.0L
LWB
emission C
VIN numbers: 787954 --> 802986 (Model year 1997)

LHE1410 = XJS but I can't find "DD"

LHE140AG601:
XJS
4.0
Automatic
Till VIN 221299 (till aprox half 1995)
I THINK emission F

In your other topic you are asking for you high idle problem, is that solved with this temporary ECU you have?
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
seacat
XJS ( X27 )
22
May 22, 2022 08:56 AM
drsolly
XJ220
1
Apr 10, 2020 02:25 PM
juuan26
XJS ( X27 )
5
May 29, 2017 12:34 PM
Dark Knight
XJS ( X27 )
2
Jan 26, 2011 02:27 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 03:28 PM.