I have a 1990 Ford F-150 ext cab 4X4 larriat XLT and my clutch is going all the way to the floor, but it is not slipping out of gear when i drive, i just have to push it to the floor to get it to go into gear. i think its my clutch cable but not sure

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Part Number Description 1 W706540-S900 Axle-to-wheel hub nut (4x4 only)
Removal Note 2 - Wheel speed sensor harness connector
Removal Note 3 2027 Anchor plate bolt (2 required) 4 - Brake caliper, pads and anchor plate
Removal Note 5 1125 Brake disc 6 1107 Wheel hub-to-wheel knuckle bolts 7 1104 Wheel bearing and hub assembly
Removal Note 8 N642567-S36 Tie-rod end-to-wheel knuckle nut 9 W707254-S427 Lower ball joint-to-wheel knuckle nut 10 W520215-S427 Upper ball joint-to-wheel knuckle nut 11 3K185 Wheel knuckle
Installation Note 12 W710279 Integrated wheel and bolt (3 required)

Check vacuum pod on front axle at the gear hub or pumkin it will have a black plastic cover over it this pod engages the gears for 4X4. Remove cover and spray down with WD 40.

is it auto 4x4 ? cuz either your switch is broken or the wires that go to the transfer case is disconnected or it might be a blown fuse

1. Press in the clutch
2. Move the gear shift
3. Release the clutch

If you don't understand this, then you shouldn't be driving.

take it to a tranny shop and have them do a diagnosis on it to make sure its not the tranny going bad

For the information given, and assuming forr a 94 it has a bunch of miles, I would bet on a slipping clutch along with a pressure plate that is glazed over. I doubt the transfer case, that's just a chain drive mechanism with nothing much to slip in there. In 2 wheel drive the transfer case drives pretty much straight through and shouldn't add to the problem.

If the clutch has over 80K on it, replace and resurface the pressure plate at the same time.

Does the clutch pedal have about 1/4" of play before it begins to engage? If not adjust the clutch play 1st and see if that helps.

Let me know if you have a further symptoms to share.

Doug

The overdrive light blinking indicates a code has been stored in you computers transmission control module, the cost will depend on the problem, some have had problems with the torque convertor clutch slipping, could be more major, get the code pulled out and I can provide you with a more complete answer. -Jared

have you check the slave cylinder to see if its moving when someone puts there foot on the clutch.
And check the adjustment on the master cylinder.

try bleeding your clutch