Sounds like you probably need a new starter. when you take the starter off the steering wheel it may ge tricky and you may break a clip taking it apart so you might want to find out how to remove it. most americna car starters on the steering colum are fairly simple to r&r once the cover is removed. they have nipples on the starter so it only goes in one way, however familarize yourself as to how you remove it. Usually the starter is not that expensive it's the labor that bites you. The job shouldn't take more than a hour at the most.
Tools: ususlly a flat head screwdriver and a very sharp (pointed) item to depress the holding pin on the starter. Various flat/Philips I don't know about your expedition I've only done Chevy's and my corvette.
Sounds like the battery is too weak to turn the starter, or you have a bad battery terminal connection. Take the battery cables loose and clean them then re-attach. If it still doesnt start, charge the battery or take it to parts store to get it checked.
usually you can tell when your car doesnt turn or or doesnt turn over its because of your starter sometimes its not the starter it could be a low battery or corroded wires leading to the starter check that first;
Most often it is the starter and not the ignition.
Loose or corroded battery cables? Loose connection at starter?
Seized engine? Loose or cooroded battery terminal Bad starter solenoid? Bad neutral or clutch safety switch?
most likely cause is bad starter, one easy way is usaully when you beat on the starter while somone is trying to key it will start, had to do this many times to save people money on tow bills. Usually a bad connection on your battery post terminals or the starter. Clean the battery post terminals and try starting if that doesnt work try tightening the nuts on the wires connecting to the starter motor. This should help unless your battery is dead. It could also be that the ground on the negative side of the battery has come off. This just happened to my '93. I had to bend the ground connector some, so that it would fit onto the terminal, and tighten the nuts on the battery, but be careful as the battery sparked at my when I did this.
the battery or the starter could be bad. the vats system could be activated. let me know.
you can try to short the starter motor . take a screw driver and bridge ffrom battery cable on starter to ignition wire on starter. if starter is good, engine will crank. if starter is bad , solenoid will click if no clicking, solenoid is bad
Ignition switch going bad, corroded or loose battery cables, starter relay or starter going bad.
no if the car doesnt start check the battery and the alternator and the starter.
most likely tha starter is bad or the power to the starter is bad
Loose battery cable? Bad starter? ( checkwires on starter) Bad starter solenoid? Bad Neutral or clutch safety switch?