Can someone help with Fuel Trims?
765

Asked by tdtony3 Apr 22, 2024 at 04:43 PM about the 1999 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

Question type: Maintenance & Repair

Hi everyone. I have an Expedition with a 5.4 engine. My fuel trims at idle are between -1.2 to -3.5 at idle & long term are -14.5 on both banks at idle.
When driving my short terms are 0 to -1 & long terms are near 0 with gas mileage going up. I have changed just about everything I can think of, that is why I'm here to see if someone can steer me in the right direction? Exp. runs great, can someone try to help?
Thanks

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