Where's the pictures that were asked for a month ago? Kinda hard to diagnose over the net. There have been a lot of suggestions to look in to and probably be done with it 3 weeks ago.
Did you pull the column apart? Did you check the steering box? Did you pull everything and inspect it and put it back together.
Obviously nobody has a dead set answer 100% for your problem, great suggestions, but still no pics of parts or joints to help further diagnose your problem. Best bet is get your hands greasy starting at the steering column and ignition. If all looks good go to the engine bay/ front end, start pulling and checking parts, clean em up and lube/reinstall as needed.