I have a 98' with the 6 cyl and auto transmission that seems to have an issue when shifting into reverse. It shifts fairly hard and obviously bucks the jeep a little bit. If i let it sit for a few minutes, it seems OK but it does not sound like the engine is running any slower nor is the RPM gauge showing less RPMs. It's got about 120K miles on it and not sure how well it might have been serviced in the past.
It does feel like it's ideling a bit high as it picks up speed more than it should when in drive and simply release the brake.
Since you can't adjust anything on these things, anyone have any ideas of what to look at???