This van is great for long road trips and I have had great mileage from it.
The only bad things that have been gone bad with this is a starter replacement, plastic moulding started to warp a bit, the engine idles weird at times. It has been idling at 2200RPM when it should be idling at 600RPM. The air bag light has been going on and off at times and the front passenger seat belt is beginning to be a bit frayed.
As I said this van is great. The radio sounds fine and the seats are comfortable. I do not have any other comments about it. I have been on a 10 hour drive and did not feel back pain after reaching my destination.
If you turn off the engine, does the idle reset to normal. If it does not, you may have to replace the computer.