I have a 92 xj limited. I was wheeling yesterday and when i was done i let her cool down a little bit. then when i went to start her back up she had a really low idle and was sputtering really bad. after a little reving it started running better. also i disengaged my 4wd and got on the road and i had a really bad clunking sound. sounded like it was coming from either my t case or my front diff. i gave it more gas and the clunking eventually went away. any ideas on what these could be??? TIA. Also when wheeling in sand do yall prefer 4hi part time or full time.