Hi, own a Jaguar S type 3ltr 2005 build, 2006 compliance. 134k
Going nuts over LTFT and STFT as OBD2 reader was purchased as Jaguar /Rover specific and full compliance on most after 2005.
Trouble is OBD2 reads in % and at this time showing bank 1 @119% Long Term and short term @124% bank 2 @ 121% Long term and 128% @short which means what?
Now I understand the concept + fuel - fuel, either side of 0 or GMH either side of -128 + also percentage with 0 being spot on 14.7/1 BUT what F are mine telling me??
Yes I know the threads here are many however plenty of speculation but no answer to my question {which I'm now putting to you} but what the f is mine telling me?
IT could be the reader however it's new it could be a new way of expressing trims I don't know. I do know that there is an air leak in bank 2 or left and the fault always sets in a trailing throttle when you would expect more vacuum to be present suggesting I am right .
I have replaced all upper O rings inlet etc checked all lines for cracks etc even the canister is ok. MAF ok throttle body good .
About to change all plugs to NGK platinum all coils to NTK two new O2 Lambda ie upstream. in the hope, it's not a slight miss on trailing throttle etc. And because I will know where everything stands.
HELP!

 

Welcome aboard Pete, a moderator will be along shortly with some helpful links to get you sorted. I’ve added you to the NSW Roll just follow the link below….good luck!

 

Welcome to the forums Pete,

I've copied your question to S-Type forum for advice from members with the same model. Here's the direct link to it:
https://www.jaguarforums.com/forum/s...s-help-255897/

Follow this link https://www.jaguarforums.com/forum/s...ed-v8-x200-15/ to the main S-Type forum for help, advice and information. The 'HOW TO' thread at the top is a good place to start for information on regular issues.
Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.

Enjoy the forums.

Graham

 

Welcome to the forums.

 

From one S-type owner to another... Welcome. The S-type forum is populated with a very friendly group and contains a wealth of knowledge.

You might want to add your car's details to the available signature line; this helps us to help you when posting to the forums...

 

Welcome to Jaguar Forums Pete,

Good to have you with us.
Enjoy the forum.

If you haven't done so already you should add your car details to your signature to help others to help you.
If you need help with getting around and using the forum follow this link for some help Forum Help

 

Hello, Pete,
Welcome to the forums from ElinorB.
(';')

 

welcome to the forum - enjoy!!

 

Welcome to the group! I’m sure there will be someone to get the information you need.

 

Welcome to the Forums.