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Old 04-22-2011, 10:05 PM
Curtis
 

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Electric window motor

I have a slight problem. I have a 84 chevy truck that the window motor quit working. I purchased a new window motor and installed, but I got to thinking that before I completly install this motor I should attach the wires and see if it works before I go further --- and it failed to work. I took it back a loose from the truck and attached the wires outside the truck door to see if it would work out there, but it didnt work either.
I have juice to the motor. I have made sure I had a good conection and still it does not work at all.
Is the new window motor bad or does it have to have a ground to work outside the truck. But it even didnt work inside the truck either -- perhaps it wasnt grounded good inside the truck -- or should I go get another window motor or look for other problems

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Old 04-23-2011, 01:21 AM
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put a hot and ground directly to the motor and see if it works
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Old 04-23-2011, 07:06 AM
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Disconnect the motor electrical connection from the door harness,use a set of jumper wires directly from the battery, one wire from the motor to the pos jumper the other to the neg jumper, motor should go one direction reverse the jumpers and the motor should go the other direction.
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Old 04-23-2011, 07:22 AM
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I would be suprised if it didnt work. They are tested when repaired. I would test the power to the OLD motor to make sure you need one. Nothing like putting in a motor to find it doesnt work because of a broken wire somewhere.
You may have power to the motor but it needs to get its ground on the other wire at the same time. The switch reverses the polarity wich reverses the motor wich makes the window go the opposite direction. You need power and ground at the same time when flipping the switch.otherwise it will just set there doing nothing.
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Old 04-23-2011, 11:27 AM
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Some of those windows motors rely on a ground from the door. Not sure on that vehicle but I have seen the door grounds rot off and the motors stop working. You need to check for power and ground at the connector while someone activates the switch. It is better to do this with the motor plugged in as sometime a bad connection will not show up without a load.

As already mentioned, test the motor first with a battery to see if it works then go after the wiring if the motor checks out ok
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Old 04-23-2011, 08:30 PM
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thanks a lot that is a lot of help I will try those things tomorrow
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