1992 Thunderbird 5.0, sometimes engine was sputtering and bogging when punching it as if trying to pass. My turn signals and fan weren't working at times either, then I discovered the ignition doesn't return all the way back after starting. If I turn the key back slightly, the turn signals and fan work, engine doesn't sputter when the key is in the right spot.

I bought a new ignition cylinder/key, same problem. Its as if the inner part of the ignition where the cylinder goes into is worn and gives the key/cylinder too much play.
What gives the key the spring return? Has anyone seen anything like this?

 

well I don't know about this. May be some helps you !!