My 1999 Safari passenger slide door is hard to open from inside or outside
you must push on the back right side of the door to get it to open while holding door handle with left hand. From the outside you must pull left back side of door with left fingers while pulling on door handle with right hand...
This isn`t really an answer it`s more like an add-on. My van had 74K when I bought it 18 months ago. The importance in this to me is I don`t have the SPRING that is being talked about either but maybe I`m looking for the wrong TYPE of spring, could it be flat instead of round. It was a city owned vehicle and well maintained except for sun damage. The dirt and stuff must be REALLY CRITICAL cause I blew out what little (very little) was in a few of the places mentioned and it works better. Not like new I`m sure but better. Maybe that was sort of an answer, hope it helps someone.
Spray a lubricant on every moving part of the door all rollers and pivot points
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