It seems that model of Jeep adds to the adventure. A friend had one, and she was having trouble with it overheating. A quick Google search made it clear that is no uncommon problem. That was an amusing link.
I had a 1990 Jeep Grand Wagoneer that I had a love/hate relationship with. It was awesome in off-road environments for a (in that day) luxury SUV. But it had all sorts of problems, and it also needed a new radiator at around 75,000 miles.