Hi i have a 2004 jeep tj, its the x model and when i put it into 4 wheel drive the front axle appears to be locked all the time. The rear axle is an open diff. It is just the base model so i do not have the ability to lock either of my diffrentials. Is this normal? I have looked at other forums and have not been able to find anthing. I am the second owner of the jeep and have no way of getting in touch with the previous owener. I know they put a good amount of money into it so maybe its an aftermarket thing. thanks for your help