sliding cargo door on my 2001 windstar sel
Recently, the driver side sliding cargo door has started acting up. Sometimes, when the door is closing, it will get almost to the point where the lock engages and then the door will reverse itself and open. it generally takes 3 or 4 tries to get it to lock. Sometimes I have to put the key in the ignition and start the van before the door will close. I don't know if that is just a coincidental symptom, but I thought I would throw it in. Any ideas of what could be wrong? Door Sensor? Solenoid? Door motor?