We have a 1994 Trooper with 233,000 miles on it. We purchased it around 160K and have driven it all over including two trips to Missouri/Illinois from FL. So far, we have replaced tires, brakes, radiator, shocks, battery, thermostat, timing belt, spark plug wires, a bent idler arm and had a shock mount rewelded to the frame. The shock mount thing was my bad.
All of the above is standard stuff really. The 4 wheel drive no longer functions (about $500 to fix) and it looks like the power steering pump is next. Honestly, we don't expect much more from a vehicle at it's age and mileage. We paid cash and enjoy no car payments, so we don't complain. The 4 wheel drive worked nicely when it worked.
Look for one that was made in Japan. Those units are built rock solid and we haven't been plagued by annoying crap like handles and knobs breaking off and stuff like that. The interior has held up remarkably well and we are finally seeing a touch of body rust on one door about the size of a dime. Not too shabby really. Aluminum rims are nice too.
We truly enjoy having this vehicle, but with gas prices where they are, my wife and I are now carpooling to work and she quit her job that required the long haul in the SUV.
Hope this helps. We are truly a fan of this vehicle. I honestly don't know what we will do when it finally dies. Probably cry.
-White Horse
p.s. This was more a picture of hurricane Dennis, but the Trooper made it in.