Thanks guys. As far as I know the lock cylinder hasn't been tinkered with. The steering doesn't lock up like the key is in the lock position,it's more like being 2-3 times harder to turn than a 30 yr.old truck manual steering,will turn just barely but impossible to make the turn. After reading the replies I think that a belt change and steering box change would be the way to go because the steering accuracy is great,,,,,when it's not having one of these malfunctions. Thanks again.