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Power window motors??

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Old Dec 4, 2009 | 05:50 PM
  #1  
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Default Power window motors??

I have converted to PW's in my '72. I bought 2 used motors, they work, but the passenger side goes up fast but down very slowly. Would it be worth it to have the motor rebuilt locally?

My question...in looking for a used motor, what years and models of GM cars (if any), other than Vettes, share the same PW motors as our C3's..

Also which years C3's have compatible PW motors as my '72?

Thanks,
Rob
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Old Dec 4, 2009 | 06:21 PM
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It sounds like the motors are good. Clean the PW switch for the pass. side. Electronic cleaner is best (even WD-40 will work). Check for binding going down.
These motors are very good- one time there was a topic where various guys cleaned various connections including one who cleaned inside the motor to fix them.
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Old Dec 4, 2009 | 06:28 PM
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Originally Posted by Ganey
It sounds like the motors are good. Clean the PW switch for the pass. side. Electronic cleaner is best (even WD-40 will work). Check for binding going down.
These motors are very good- one time there was a topic where various guys cleaned various connections including one who cleaned inside the motor to fix them.
Ganey,

I mentioned that I was doing a conversion. The switches are brand new, as is the harness, relay, connectors, regulators, rollers, etc... everything except the motors. The window glass isnt even in yet, so theres nothing really to bind. I checked for that, as I can look into the top of the door, and the regulator is moving free.

Thats why I figured it might be the motor. It really scoots going up, really struggles going down..

Rob
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Old Dec 4, 2009 | 06:43 PM
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Rob

You need the glass in! The reg. spring helps lift the window so w/o the window that's what I would expect.
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Old Dec 4, 2009 | 06:48 PM
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Originally Posted by Ganey
Rob

You need the glass in! The reg. spring helps lift the window so w/o the window that's what I would expect.
Ganey,

I thought about that, but the driver's side runs up and down at the same speed...quickly! I guess I expected the passenger side to do the same

Rob
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Old Dec 4, 2009 | 07:00 PM
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Think of the spring as a counterbalance for the window.
If the dr. side has no window, then check for reg. spring installed wrong.
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Old Dec 4, 2009 | 07:11 PM
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Originally Posted by Ganey
Think of the spring as a counterbalance for the window.
If the dr. side has no window, then check for reg. spring installed wrong.
I'll check, but the regulators came with the spring already installed.

Thanks Ganey!

Rob
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Old Dec 4, 2009 | 07:28 PM
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The pass side sounds normal considering the weight of the glass is gone but you might have a problem on the drivers side.
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Old Dec 4, 2009 | 07:31 PM
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Originally Posted by ...Roger...
The pass side sounds normal considering the weight of the glass is gone but you might have a problem on the drivers side.
Hmm..never thought of that, but they are completely new components.

I'll put the glass in and try it then...

Thanks,
Rob
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