where is the mass air flow sensor? on 1998 Ford Expedition

my expedition wouldnt start the other day and i diagnost tested it and a code poped up saying manufactor control air fuel metering, not sure what that is but the truck was turning over but didnt seem like it was getting fuel, so i put a fuel pump in it but that wasnt the problem, the relay wasnt it either, and the fuse is good. so what else could it be?

1 answer
The truck won't start because your anti-theft system is shutting it down. I see this happen many times.