There was an interior mechanism in those model years that was supposed to not only hold the door open, but not to have it open too far. The Mechanism was under engineered on both counts. I had the same system on a 06' Meridian that I had. To hold the door open in a wind I used a length of soft cotton rope, about 1/4" thick. I tied one end around the passenger side mirror support and made a loop at the other end. Then I would loop open end around the inside door handle leaving just enough slack to remove when I wanted the door to close.
To handle the other problem, I used a short length of nylon strap about 14" long. I then attached one end to the top of the door frame, and the other end to the top of the door. I drilled two small holes at each end and attached the strap with short galvanized metal screws. It worked well for years until I sold the unit. I may have some pics I took of the install somewhere if you are interested.
Sarge