XJ XJ12 ( X305 ) 1995 - 1997

Gear selector woes

 
  #1  
Old 04-27-2018, 10:42 AM
Marc-XJ12's Avatar
Member
Thread Starter
Join Date: Sep 2017
Posts: 31
Received 14 Likes on 8 Posts
Default Gear selector woes

Hello all, Iíve nearly had my 96 XJ12 for a year now, for the most part itís been nothing but a pleasure to own and drive and with lots of research on this forum Iíve managed to sort some common issues like the electric mirror switch.


So I thought Iíd tackle another common problem; the linear switch in the gear selector. I get odd occasions when I have to press the gear selector forward before the engine will crank, no problem I thought but the other day after sitting for most of the week it wouldnít crank at all and no amount of wiggling the selector helped. So I took the cover off and moved the selector until it started. Everything back together it seems ok again but after a bit of research I thought it best to nip this in the bud before it really lets me down.


The problem is on a second inspection I notice someone has already had a good go at this in the past! The solenoid which moves the catch when the brake pedal is pressed is missing and the catch has been bent back for some reasonÖ. also the park position micro switch has been removed and hangs loose under the radio console and the linear switch circuit board looks like it has been modified, possibly to adapt to the other bits that have been removed.


Has anyone come across this before?? Iíll add pictures to help illustrate exactly what Iím talking about.


The general view
The bent back catch and absence of a solenoid
Whatís going on here?
A loose connector... would this be from the missing solenoid?
The micro switch, Broken from its mount and not functioning
 
  #2  
Old 04-29-2018, 04:37 AM
Marc-XJ12's Avatar
Member
Thread Starter
Join Date: Sep 2017
Posts: 31
Received 14 Likes on 8 Posts
Default

I found this on eBay £50 itís from a XJ6. Hoping its a straight swap

 
  #3  
Old 04-30-2018, 02:43 AM
SleekJag12's Avatar
Veteran Member
Join Date: Dec 2012
Location: Scottsdale, Arizona, USA
Posts: 1,094
Received 316 Likes on 246 Posts
Default

Hi Marc,

Looks like quite a heavy-handed butcher job. Apparently someone was very upset with the gearshift interlock system! A shame these things happen.

The shift mechanism is almost a straight swap. Unfortunately the part that won't fit from an XJ6 assembly is the linear switch, one of the parts you might need. The XJ6 has a different part in the same location called the decoder module (seen in the ebay picture). Its for the ZF transmission in the XJ6. Maybe you can salvage the old linear switch. If I recall correctly, the linear switch is only used for illuminating the red gear selection letters. Did that function work in the past? You also need that microswitch. Hopefully that is included in the new mechanism if you get it.

The broken microswitch might have been bypassed or shorted to allow cranking (in ANY gear). That switch was probably the weakness with your trouble engaging the starter. The broken switch was broken.
 

Last edited by SleekJag12; 04-30-2018 at 02:45 AM.
The following users liked this post:
Marc-XJ12 (04-30-2018)
  #4  
Old 04-30-2018, 03:09 AM
Marc-XJ12's Avatar
Member
Thread Starter
Join Date: Sep 2017
Posts: 31
Received 14 Likes on 8 Posts
Default

Thanks for the info. The red gear selection letters were working so hopefully between the butcherd one and the one from eBay I can get this sorted Pretty easily...... did I just speak too soon?
 
  #5  
Old 04-30-2018, 06:44 PM
Lady Penelope's Avatar
Veteran Member
Join Date: Apr 2017
Location: Kansas City USA
Posts: 3,750
Received 1,203 Likes on 957 Posts
Default

The Jaguar part # for the specific linear switch ( other then the whole shifter box ) is different though the years of X300 production and engine / transmission combinations . Don't know why myself but if you post in the X300 section you might find someone with the inline 6 supercharged with the same transmission and Xmission ECU that knows .

https://www.jaguarclassicparts.com/u...trol-automatic

I'm removing the linear switch on a 6 banger donor car tomorrow, any tips on it's removal .


Editing wire diagrams 1 of 3 pages ( in living color ) to straighten out on yours


 

Last edited by Lady Penelope; 04-30-2018 at 07:05 PM.
The following users liked this post:
Marc-XJ12 (05-01-2018)
  #6  
Old 05-01-2018, 07:57 AM
Marc-XJ12's Avatar
Member
Thread Starter
Join Date: Sep 2017
Posts: 31
Received 14 Likes on 8 Posts
Default

Originally Posted by Lady Penelope View Post
I'm removing the linear switch on a 6 banger donor car tomorrow, any tips on it's removal
Once the ski slope and j-gate are off itís easy enough just 2 screws to remove and the 2 connectors. Just very tight getting a screw driver in on the side but doable with some perseverance

Thanks, Marc
 
The following users liked this post:
Lady Penelope (05-01-2018)
  #7  
Old 05-14-2018, 01:04 PM
Marc-XJ12's Avatar
Member
Thread Starter
Join Date: Sep 2017
Posts: 31
Received 14 Likes on 8 Posts
Default

Hi, just to conclude the 3.2 XJ6 gear selector went straight in to my XJ12 and worked with no modifications, the linear switch part number is LNA6550BA which appears to be used in all XJ’s from chassis no. 720125 to 812255 (x300)

Now everything is working as it was intended, I have to press the brake to shift out of P and the doors lock when I select D which they never did before!

Thanks again for all your help and advice.

Marc
 
The following users liked this post:
SleekJag12 (05-18-2018)
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
vsol
XJ XJ8 / XJR ( X308 )
33
03-24-2016 07:37 AM
snooktarpon
S-Type / S type R Supercharged V8 ( X200 )
17
07-08-2012 01:58 PM
britishautowood
XF and XFR ( X250 )
5
03-19-2009 11:25 AM
lincjag
XK8 / XKR ( X100 )
1
03-01-2009 01:37 PM
lovethemcars
XJ6 & XJ12 Series I, II & III
1
03-11-2008 04:54 AM

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

Thread Tools
Search this Thread
Quick Reply: Gear selector woes


Advertising
Featured Sponsors
Vendor Directory

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.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: