Member Since: 08 Feb 2016
Location: middlesbrough
Posts: 316
auto gear box replacement
hi all,if i replace my gear box with another will i need a new torque converter fitting, not sure what will need to be done
tia
22nd Mar 2023 9:08 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
Yes i would replace itAndrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
22nd Mar 2023 9:45 pm
loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 698
If you are fitting a used trans then you will need to either reprogram the mechatronic or swap your TCM from the valve body into the replacement trans, new or rebuilt TC is advisable.
22nd Mar 2023 11:00 pm
monty1
Member Since: 08 Feb 2016
Location: middlesbrough
Posts: 316
thanks for the advice
23rd Mar 2023 6:59 am
D3faf
Member Since: 10 Aug 2022
Location: Devizes
Posts: 25
loanrangie wrote:
If you are fitting a used trans then you will need to either reprogram the mechatronic or swap your TCM from the valve body into the replacement trans, new or rebuilt TC is advisable.
Interesting. When I fitted a second hand gearbox to my 2007 D3 I didn't do any coding or swapping or parts. It all worked fine.
Why would you need to code or swap parts? Just curious
23rd Mar 2023 3:40 pm
loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 698
It shouldn't work as the TCM needs to be programmed to the vehicle or you re-use your TCM.
23rd Mar 2023 9:51 pm
D3faf
Member Since: 10 Aug 2022
Location: Devizes
Posts: 25
I definitely haven't had to do anything like that and it all works lovely. Also done over 12000 miles since.
Odd.
23rd Mar 2023 10:00 pm
motorworks
Member Since: 14 Nov 2019
Location: Usk
Posts: 412
Manual transmission?Chris
24th Mar 2023 3:29 pm
Trailered Movements
Member Since: 16 Jan 2020
Location: East/West Sussex Coast Borders
Posts: 1200
If you fit a gearbox from the same year, and with the same engine, it will work without any coding.
I changed just the megatronic unit (which is the bit that would be relevant to programming) from a RRS to my D4 and it was OK straight out of the box.
Dave2011 Discovery 4 Commercial SDV6 (Gone)
2010 RRS TDV8 (Gone)
1980 OBLIC 4.0ltr Range Rover (went a long time ago)
24th Mar 2023 3:36 pm
D3faf
Member Since: 10 Aug 2022
Location: Devizes
Posts: 25
Auto Box was from an earlier truck than mine. Think 05.
Haven't coded anything since fitting it in my mates barn.
All working fine. Guess I've been lucky
I would recommend a TC replacement when swapping the box. I didn't do mine and have been lucky but the work involved to remove it all again if it goes wrong I would definitely fit a new TC next time.
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