I bought this 1993 XJ Country a few months ago, a tow car that has 153,000 miles but it has been sitting in a garage for some time, maybe years, and I have had trouble getting it to go into 4wd. Select Trac transmission. After trying a few times it went in to fulltime 4wd mode. Now, after putting it back into 2wd mode, when I turn on the key it makes a awful schreeching noise from the transmission. The engine doesn't need to be running, I just turn the key is on and the noise starts. Like an electric motor is running and there is a bad bearing or a warn bushing. The noise is very loud and it is coming from the transmission. Any ideas? Is it terminal or can I keep driving? If it is electrical, can I disconnect a wire or pull a fuse to stop it for now? Is there a fix I can do myself or is this a transmission shop job?

Scott