See "Related Questions" below for solutions to this very common problem.
AnswerAccording to my owners manual, the fuse is a 15amp fuse in spot no. 29Not very likely - the Windstar was significantly redesigned in 1999, and the dimensions of the vehicle were changed.
Dead interior light fuses or the bulb if it's assumed no major problems.
you have a cylinder misfire
From the Owners Manuals:1995-1998 - Fuse #27 - Interior fusebox1999-2003 - Fuse #27 - Interior fuseboxSee "Related Questions" below for more
Replace freeze plug in a 1998 ford windstar ?
Check fuses
Not likely - the 1999 Windstar was a rather significant updating of design compared to 1995-1998 models.
A 1998 Ford Windstar would use refrigerant 134a
Try spraying WD-40 on the door latch, the part that is on the door itself. The door ajar switch is located in with the latch. Had the same problem, door ajar light on, interior light stays on, and horns toots twice when you lock with remote, to signal door is not closed. Door was shut but truck didn't know it, WD40 fixed it.
It will either be a Phillips or a torx. Look and see.
Should be common to the parking/tailight fuse
Very possible a door switch is defective.