I have a 1990 ls 400, since i got the car, the ignition cylinder has been a little tricky as the key doesnt slide in smoothly, yesterday i tried to start the car but the key wouldnt turn, eventually i got the key to turn to "on" but not to "start". I do live in michigan and it has been colder this past day, please any advice would be greatly appreciated. also i have been driving without power steering for a few months i dont know if that could have created this problem