I have a 2000 Disco,
The Truck Starts and sometimes goes into gear although it will not move? Sometime I can take the key out sometimes I cant. I have checked the fluid and no sighns of medal or burnt smell. Actually very clean. Any ideas?

 

Can you give us more info?
When you say ti wont move what? No matter how hard to press the gas pedal it will not move?
Is the front and rear driveshafts there?
Do the front or rear driveshafts move with the truck in gear?

 

Both are there nothing is moving at all. It makes a very light sound when in gear but it's as if the transmission will not catch. I have moved the 4 wheel drive from low to high and still nothing. They key will not come out of the ignition and sometimes I'm not able to get it out of park.

 

I'm going to go out on a limb and say it is a bad XYZ switch, you can remove it and rebnild it.
Just do a search on the forum for it.

 

When you crawl under there to examine the xyz switch, with truck choked, have someone move gear shift while you watch to be sure selector cable is actually causing the switch center shaft to rotate. C clips and other parts.

 

Before removing or rebuilding the switch, I'd loosen it and try to adjust it.

 

First, are you sure your t/case is in High? If you give the engine gas, when the tranny is in drive, does the tach increase?
Might want to have someone start the engine and put it in drive while you look under the truck and see if either of the drive shafts are turning when the tranny is in drive.
Let us know what you find.

 

i could be wrong here but if the truck holds in Park, then the transfer case is engaged.

 

Ok so I had someone start the car.. The tach does go up and no movement in either drive shaft. The car is in H

 

and it does hold in park but the key will not release