I have a 1994 mark VIII it will go into gear but won't shift

SOURCE: lincoln ls shifts hard into reverse

You will have to have the solenoid body replaced in the tranny and have the PCM reprogrammed.

SOURCE: lincoln mark viii

You will first need to remove the plastic piece behind the inner door handle that you use to pull the door shut with and there should be a 10mm bolt inside there behind the insulation. The plastic cover behind the inner door lever handle will need to come out. It's only in with clips. Remove the reflective lens on the end of the panel and you will see a phillips head screw inside. It's a long screw so be ready for many turns to get it out. Next, your power window controls will need to come out and they are only snapped into place but be careful with them because plastic prongs can be broken off if not pried out in the right direction. The same goes for the door lock switch. Unplug both once out. You will also see a triangle plastic piece (can break easily) towards the front top side of the panel. Make sure it clears it's way out when removing the panel. The rest of the panel is held up with downward facing plastic clips. Sounds hard but really it's all pretty simple. Study the back of the panel before putting it back on and take your time.

SOURCE: tranny shifting hard

try changing your transmission filter if the problem continues try taking your car to a transmission shop and see what they tell you

SOURCE: my lincoln towncar 1994 is stuck in park unless i

Your brake lights are most likely inop. this is what triggers this.

SOURCE: Trannys out and I dont have the money for a rebuild. Will a 95 ford thunderbird 4.6 tranny work?

I believe it should work ok