My question concerns the power window motor on my 2002 Ford F150. The window would not operate from either the driver side switch or the passenger side switch. I purchased a new motor as I figured this was the source of my problem. (The driver side window works just fine.) My problem is this: before I did anything with the new motor I removed the old motor from the regulator and reconnected it to the power source. I depressed the switch (ignition in the on position) and the motor ran BUT only in the “down” function. I then connected the new (good) motor and with the same results; works only in "down” function. My question is: why do both the old motor and the new one function the same? Does the motor gear need the weight of the window “pushing” down in order for the “up” function to work?

Asked by Aug 13, 2017 at 09:43 PM about the 2002 Ford F-150

Question type: Maintenance & Repair

2 Answers

264,345

http://ths.gardenweb.com/discussions/2266271/power-window-goes- down-but-not-up

21,120

Working with DC motors many use reverse polarity to run the motor in the opposite direction. Using a 12 volt power source connecting the motor + to - will cause it to run in one direction. Switching the leads from - to + reverses the motor.

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