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Power window motor not working

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Old Sep 27, 2017 | 12:14 PM
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Default Power window motor not working

I need help with replacing the drivers side power window motor on my 1978. The window is stuck in the down position, and I know that I need to raise it about half way in order to be able to put a bolt in the regulator and remove the three motor bolts. Are there any suggestions on how I can get the window raised half way?
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Old Sep 27, 2017 | 12:18 PM
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Be sure and check the electrical connections before you go through all the hassle of replacing the motor. Make sure you have 12v at the connector to the motor.
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Old Sep 27, 2017 | 12:30 PM
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Give it a jolt from another power source, I've had it happen on another of my old cars, 50 plus years of that motor stopping in the same spot and all those years of dirt and grime. I actually went so far as taking the motor apart and cleaning it and now 12 years later it is the best functioning window motor on my T Bird. As far as the spring tension releasing, Im fairly certain as long as you DONT remove the glass it will keep the tension on the spring.
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Old Sep 27, 2017 | 12:53 PM
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Originally Posted by Sayfoo
Be sure and check the electrical connections before you go through all the hassle of replacing the motor. Make sure you have 12v at the connector to the motor.




Yeah, I applied 12v to the motor with my power probe, and tapped the motor and nothing.
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Old Sep 27, 2017 | 12:54 PM
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Originally Posted by danh77
Give it a jolt from another power source, I've had it happen on another of my old cars, 50 plus years of that motor stopping in the same spot and all those years of dirt and grime. I actually went so far as taking the motor apart and cleaning it and now 12 years later it is the best functioning window motor on my T Bird. As far as the spring tension releasing, Im fairly certain as long as you DONT remove the glass it will keep the tension on the spring.


Thanks, I applied power with my power probe, and it would not budge.
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Old Sep 27, 2017 | 01:37 PM
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Originally Posted by gz78
I need help with replacing the drivers side power window motor on my 1978. The window is stuck in the down position, and I know that I need to raise it about half way in order to be able to put a bolt in the regulator and remove the three motor bolts. Are there any suggestions on how I can get the window raised half way?

Disconnect the glass and pull it out. Once out you'll have a lot more room to work.
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Old Sep 27, 2017 | 02:38 PM
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Remove the 3 long bolts that hold the field case to the regulator then remove the case and start turning the armature.
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Old Sep 27, 2017 | 05:04 PM
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Been awhile but fairly certain I used my jiffy jump, not sure what kind of juice your power probe puts out, I might consider a introduction with your favorite hammer also.
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