Fuel trims
Senior Member
Joined: Oct 2016
Posts: 3,702
Likes: 766
From: Parts Unknown
There is no "normal" for just a 5.8. This applies to all. Ideal would be zero. If you get up to +/- 3 that would be very good. A code may set around +/- 7 for a length of time.. I would be more concerned with long term trims, not the short ones. Long term is every driving condition factered in, not just idle.
Last edited by raski; Oct 13, 2019 at 06:54 PM.
Member
Joined: Jan 2018
Posts: 11,256
Likes: 1,770
From: Memphis, TN, Earth, Milky Way
There is no "normal", and there are a few thousand LTFTs for your engine right now. Even just at idle, there are a few hundred. Click this & scroll down to that entry:
http://www.fourdoorbronco.com/board/...-Abbreviations
Is there some symptom you've noticed while driving that prompted you to try to diagnose it? Post THAT, and we might be able to help you. But first, put ALL the truck's details & history into your signature, as this caption explains:
(phone app link)
http://www.fourdoorbronco.com/board/...-Abbreviations
Is there some symptom you've noticed while driving that prompted you to try to diagnose it? Post THAT, and we might be able to help you. But first, put ALL the truck's details & history into your signature, as this caption explains:
(phone app link)