i had the same problem but on a 2001 still the same process and just as hard to get to.the line was very lose and froze on the fitting and caused a leak so i replaced the line and stopped the leak.you will need a crows foot wrench if you are a d i y guy its about a 17 or 18 mm and is about a 20 dollar part good luck.
Have you checked the power steering pressure line?
Check to see where leak originates could be: Leaking pump seal Leaking high or low pressure hose Could be steering rack
Start with the vehicle speed sensor the feeds the speedometer and odometer.Also look at the Brake/Speedometer problem associated with the Windstar recall for a leaking brake pressure switch
What will happen if u I added power steering fluid to a leaking power steering pump
your power steering fluid return line, also known as your power steering low pressure line, may have a hair line crack in it and need to be replaced.
1 - All of these are protected by fuse #102 - the fuse is likely to blow as soon as you replace it3 - this is the #1 symptom of a leaking brake pressure switch4 - the leaking brake pressure switch is the reason for a Windstar recallIf you do not want to wait for your recall notification letter (I don't have mine yet), it's an easy and inexpensive repair.See "Related Questions" below for more
The fluid could be leaking from the pump, hoses, or steering rack. Wash the steering system, then you can see where the leak is coming from.
You need to replace the power steering pump. If it is leaking, it is going out.
The fluid can get on the exhaust, very slight chance of a fire. If all the fluid leaks out, you will not have steering assist.
repair the heater hose.
the windstars are know for intake manifold leaking it could also be radiator or water pump you need to try to locate the leak or have it pressure tested to know for sure
sounds like the inside of the pump isn't turning,backyard mechanic try to locate the pressure hose to the steering box,now carefully it might take two ,remove the hose and see if you have pressure