I'm having an intermittent issue with my automatic transmission in a 2003 Wrangler with about 65,000 miles. When the Jeep is cold it occasionally won't immediately go into gear (reverse or drive). If I put it back in park and/or rev the engine a little it goes into gear. There doesn't seem to be any problem shifting once in gear, just wonder if it is simply a linkage problem or something more serious. Anyone have any experience with a similar problem?