Advertise on fullfatrr.com »

Home > Technical (L405) > what is resetting the fuel trims?
Post Reply  Down to end
Page 1 of 1
Print this entire topic · 
Fleagle_UK



Member Since: 20 Mar 2013
Location: Cheshire
Posts: 409

United Kingdom 2014 Range Rover Autobiography SDV8 Luxor
what is resetting the fuel trims?

Car in at main dealers for some investigation work by Landrover Technical.

One of the things amongst others I've been told they are doing, is "resetting the fuel trims".

I'm fairly mechanically minded but never heard of this...anyone know what they mean or what it is?

thanks.

Post #477206 30th Apr 2018 11:32am
View user's profile Send private message View poster's gallery Reply with quote
Montys 4x4



Member Since: 23 Dec 2014
Location: Suffolk
Posts: 70

United Kingdom 2017 Range Rover Autobiography TDV6 Carpathian Grey

What engine do you have and current mileage ? interested due to my own issue with oil dilution with diesel during the DPF regeneration process on my 6 month old RR.

Paul Journey started in a LR2B at 16 and has incl. just about every Land Rover, Disco, RRS and Range Rover Vehicle owned or driven, I even worked for the company when it was owned by BAe - It must be a madness!!! because to add to my 4.4 TDV8 Westminister In Baltic Blue I bought a second L322 as a commuter bus, TD6 2004 Vogue in Oslo Blue with cream leather now both gone replaced with what could turn out to be my biggest mistake. Carpathian Grey ivory interior 3.0 tdv6 Autobiog. 2017

Post #477210 30th Apr 2018 12:40pm
View user's profile Send private message View poster's gallery Reply with quote
zarnd



Member Since: 22 May 2014
Location: Kent
Posts: 459

United Kingdom 2005 Range Rover Vogue SE 4.2 SC V8 Bonatti Grey

I would have though that you will have a short and long term fuel trim.

By resetting these LR can then see if there is an issue with your car if they are re-checked and are out of manufacturers specification.

cheers Alex

2018 Skoda Kodiaq vRS
2009 Caterham Supersport Race car
2007 M5 Touring
2005 Range Rover Vogue SE Supercharged
2004 SL55 AMG

Post #477212 30th Apr 2018 1:15pm
View user's profile Send private message View poster's gallery Reply with quote
finchi



Member Since: 25 May 2017
Location: Hampshire and Cheshire
Posts: 120

United Kingdom 2017 Range Rover Autobiography 5.0 SC V8 Carpathian Grey

"Fuel trim" is relating to the air/ fuel ratio entering the cylinder head.

Post #477214 30th Apr 2018 2:18pm
View user's profile Send private message View poster's gallery Reply with quote
Fleagle_UK



Member Since: 20 Mar 2013
Location: Cheshire
Posts: 409

United Kingdom 2014 Range Rover Autobiography SDV8 Luxor

Laughing so in old fashioned speak they are simply resetting the mixture back to factory standard before the ECU "learns" optimum based on road usage / driver demand etc.

thanks all.

Post #477218 30th Apr 2018 3:37pm
View user's profile Send private message View poster's gallery Reply with quote
Fleagle_UK



Member Since: 20 Mar 2013
Location: Cheshire
Posts: 409

United Kingdom 2014 Range Rover Autobiography SDV8 Luxor

Montys 4x4 wrote:
What engine do you have and current mileage ?



SDV8 - 29k.

Post #477219 30th Apr 2018 3:39pm
View user's profile Send private message View poster's gallery Reply with quote
zarnd



Member Since: 22 May 2014
Location: Kent
Posts: 459

United Kingdom 2005 Range Rover Vogue SE 4.2 SC V8 Bonatti Grey

Fleagle_UK wrote:
Laughing so in old fashioned speak they are simply resetting the mixture back to factory standard before the ECU "learns" optimum based on road usage / driver demand etc.

thanks all.


To a point yes Laughing , but I presume that the car has an issue and this is one way to check your air/fuel ratio Alex

2018 Skoda Kodiaq vRS
2009 Caterham Supersport Race car
2007 M5 Touring
2005 Range Rover Vogue SE Supercharged
2004 SL55 AMG

Post #477220 30th Apr 2018 4:18pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 1 of 1
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
fullfatrr.com RSS Feed - All Forums


Switch to Mobile site