Sorry to have to start yet another thread about this.
I have never owned or driven a Jeep before. I just bought a '99 4.0L Sport with 5 speed transmission. I was sitting completely still in neutral. I was reaching down to disengage the parking break, but instead I pulled up on the 4wd lever (to the 4 HI setting) The 4x4 light on the dash came on. I immediately pushed it back down, but the light is still on. Also, and more importantly, the Jeep is still in 4wd.
I have tried driving in reverse. Shifting into and out of 4 HI on the fly. Shifting into 4 LOW while not moving. Still stuck.
Also the 4wd lever doesn't feel like there is any tension or any resistance when it is moved. Basically it easily slides up and down without feeling like it has done anything