My name is ***** ***** I am a licenced diagnostic technician with over 20 years experience.
I will do my best to help you with your automotive problem. Please remember, I cannot see, hear or feel your vehicle which can make diagnosing very complicated and some vehicle require extensive diagnotics that require certain diagnostics computers that can not be done over a computer or phone.Please be patient as I am not online 24 hours a day, as I do work, but I do check my page every day.A positive rating is always appreciated for my time and knowledge to help you with your problem.
I have had to replace ignition switches on quite a few of these.
I did happen to have one that did the same thing yours did. I could start it by turning it with a screwdriver but bolted in it would not work. It ended up being a bad switch right out of the box.
It can be hard to check this kind of problem without seeing it with my own eyes, this is where i wish i could pop my head out of your computer and see it properly.
If you have installed a lock cylinder as well, please make sure that it is the right one. sometimes you can miss something and its a little different length wise.
does it feel like its binding at all? does it have a full sweep stroke when turning it? or does it feel like it stops..
If everything is bolted in correctly and no binding with full turn, than theres a good chance that the new switch is a defective one.
I hope this helps