One problem related to ignition module has been reported for the 2002 Ford Windstar. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Ford Windstar based on all problems reported for the 2002 Windstar.
At drive-through, radio suddenly quit, and the abs and brake lights came on. Right turn signal came on, vehicle began to pulsate and surge. Pulled over and shut van off, would not restart, lights and hazards began flashing and would not turn off. Retried ignition, lights and hazards went off, van completely died. Informed to replace battery, had battery tested, it was fine. Replaced battery, followed instructions to reset computer after battery replacement. Had to drive van 10 miles to complete, during which abs and brake light came on, headlights quit (after dark) then began flashing. Turn signal came on to signal right turn on its own. Just before returning home, headlights quit entirely, and airbag light came on. Parked van, let it idle, and the tachometer surged from 500rpms to 3000rpms. Seems to fit descriptions others are saying about abs and speed control module underneath master cylinder getting soaked with brake fluid.