One problem related to transmission solenoid has been reported for the 1999 Ford Windstar. The most recently reported issues are listed below.
Awful noise coming from front of vehicle with tendency to stall. Towed to lee myles transmissions, with diagnosis of a separated 1/2 drum asm epc solenoid. Repair cost $2148. 03 minus $180. 28 plus tax for a transmission cooler with labor.