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Power Window Question

 
Old 08-19-2017, 10:16 PM
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ksbunting
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Default Power Window Question

Need help please
Passenger front window goes down fine, but stops intermittently when trying to raise window back up, and then makes a clunking noise. If I grasp the window glass and gently pull up, it will then come up all the way with the motor. I have the door liner off and I can see that when it makes the noise, the large metal gear on the motor that contacts the window regulator lifting mechanism is not moving so I am wondering if it could be an internal noise (vs. external) in the electric motor itself, perhaps requiring motor replacement.
Any help or suggestions greatly appreciated as I am trying to repair this myself without involving the dealer.
Thank you,
Kurt

PS: This problem is with my "other" car but I am asking on this forum because people on the Corvette Forum respond 100 times faster than any other forum. Thanks in advance.
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Old 08-20-2017, 08:37 AM
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Racer86
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First, check your battery voltage, and see if it is low, then continue on to the motor
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Old 08-20-2017, 10:09 AM
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ksbunting
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Thank you
Will check the voltage today and then possibly swap out the motor and see if that cures the problem.
Kurt
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Old 08-20-2017, 02:49 PM
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Voltage should be at least 12.6. At 12.volts the battery has 50% capacity.
D.C. Motors by not like low voltage.
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Old 08-20-2017, 06:44 PM
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ksbunting
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Voltage 13.8 at idle, 15.6 at high idle and still could not raise window without help
Is it possible the gears inside the motor have stripped?
I know on my 68 Corvette, the gears inside were plastic, not sure if this German car is the same as I have not taken motor apart.
New power window motor is $681 from dealer.
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