Similar Problem with 1997 Lariat Driver Window
I have a 1997 Lariat that has a problem with the Driver side window, it won't go down. I have replaced the switch, all the relays and have even taken the door apart to check the motor and regulator. Testing the power to the motor, the motor gets power to roll the window up, but no voltage down. I replaced the down relay again and it worked for a couple of days and died again, thankfully in the up postion. The motor will work with power and I tested it with a replacment motor and it did the same thing!?