1998 Ford Windstar Drive Train

The problem with the trans is definitly internal, however it is not likely to be a solenoid. If you can get the vehivle to move by placing it into M1 or M2, it may be a solenoid. I have seen this happen all too often on windstars though. The problem is most likely a broken shaft inside the trans. I have also seen the entire trans overheat and litteraly wedge together the guts of the trans. I have also seen torque converters break, since they are responsible for driving the trans pump. Any repair to the trans should be done on a lift though since the subframe has to come out. Good luck.