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International Automotive Technicians Network
Re: Ford Expedition, 25% Fuel Trim, no MIL
Posted to Technical Discussion Forum on 3/12/2003

Hey Tadd, I heard about a truck with a bad splice to the injector harness which caused low current to the injectors. This in turn caused very high trim readings. Now I believe this one was setting codes, and the condition was at all times (loads, rpms etc.). E... Login to read more.