I need to know what fuse that powers the fuel pump in my 1999 ford expedition it has a 5.4 va 4 wheel drive

Have the battery tested and if its good check fuses. If its not that its a wiring issue.

At the risk of going to the offensive, sometimes it's the simplest thing - you ARE putting it in neutral, at a stop, engine running, with the brake pedal pressed, when trying to shift out of 4wd, yes?

2) Check for blown fuse for 4x4 shift module

3)This sounds dumm, but worked on my wife 99. I took it to a school parking lot, put it in reverse, floored it and pulled on the lever and it popped out of 4x4

4) The shift motor is bad. Replace it.

Hope this helps.

Remove the fuel pump fuse and the engine wont start.

fuel pump control module.... they are bolted to the frame just behind left rear wheel. typically they are rotted severly and may even have a hole in it. typical problem

• There is no fuse just for that light. If the 4 wheel drive light is not coming on you have an electrical problem such as a split wire or the switch itself of the shift actuator motor inside the transfer case is malfunctioning. If the hubs are not engaging into 4 wheel drive either let me know and I will post a diagnosis list for you.

• Hope this helps.
  

i would start off by checking the fuel pump relay. look in you owners manuel to see its location i know its under the hoods in the fuse box. just not sure which number it is. when you do find it swap it with one that you know works just not the one for the pcm,(ecm). if still not working take i test light under the truck drivers side and find the wires going to the tank. you will need someone the cycle the key on and off. do not turn the engine over for this test. there sould be one wire that power only for a few seconds. if you get find one that lights up the test light for a few seconds and then goes out. and all of fuses are good you have more issues then i care to type about.

Here is the manual
FUEL PUMP SHUT-OFF SWITCH After a collision, if the engine cranks but does not start, the fuel pump shut-off switch may have been activated. The "Fuel Reset" indicator light will illuminate in the instrument cluster. The shut-off switch is a device intended to stop the electric fuel pump when your vehicle has been involved in a substantial jolt. 1. Turn the ignition to the OFF position. 2. Check the fuel system for leaks. 3. If no fuel leak is apparent, reset the fuel pump shut-off switch by pushing in the reset button. 4. Turn the ignition to the ON position. Pause for a few seconds and return the key to the OFF position. 5. Make a further check for leaks in the fuel system.
The fuel pump shut-off switch is located in the passenger's foot well, behind the kick panel.

Usally these warning lights come on for a reason.
I would have someone plug a OBD II reader in and retrieve the code.
The code should be able to tell you specific information on why the light is on.
Until you find out I would not us the 4 wheel drive function.

replace the fuel pump

Here are two things to check.There is a type of antispin brake that smothers the air intake when it detects a difference in rear wheel speed. This is to prevent spinning in mud or ice. Thus the air HORN sound. There is a control sensor in the rear axle which may be bad.