Should the front drive shaft on a 97 jeep wrangler always turn when in 2Hi?
No, the front driveshaft on a 1997 Jeep Wrangler should *not* always turn when in 2Hi (2-wheel high). In 2Hi, only the rear wheels are powered. The front driveshaft should only rotate if the transfer case is engaged in 4Hi or 4Lo. If it's spinning in 2Hi, there's a problem, likely with the transfer case or a linkage issue.