Didn't want to derail the other thread with my issue:
(https://www.f150forum.com/f4/miles-o...-67092/index5/)



Anyone have any idea how/where a good write-up would be on replacing the FF module?

From what I can tell my 06 supercrew has a 30gal (thought it was 27), but apparently they all do unless you opt for the larger option. (so I've read)

From 1/4 tank to full is roughly 10.9 gallons in at the pump, but I'm getting 17-18mpg interstate and no codes; SOOO , from all my research it has to do with the FF module that reads the ethanol level failing causing the fuel gauge to read improperly?

If I'm off-base; let me know- but it really sounds like this is the issue I'm running into- I would say it's either that or the sender, and being the fuel actually does read as 'full' when the tank is full, and never drops to E; I'd assume it's this module... (yes, assume) lol



Found this https://www.f150forum.com/f4/2007-f1...harness-40522/ thread ; seems like what I'm looking for- not exactly sure where / how to replace it though?