Can someone help me with my window motor replacement?

[euroZ06]

73 charger here.

The window wont go up it goes down, but wont come up. It started acting up a few months ago, but the other day failed completely. I took off the door panel, but not sure if i can get the motor out, unless there is a trick to it. Does the door have to be split? How do i do that? Any advice? Anyway to fix the motor? It all looks in fairly decent shape, doesnt look like the motor is that old, and connections seem fine (wiring doesnt look too old either).

Please help

[1972DodgeChargerSE]

In order to get the motor out all you need to do is reach back there, remove the 3 bolts attaching it to the regulator, and carefully jockey it out. Good luck!

[Dino]

Aren't you supposed to stick a bolt through the mechanism so it won't release under the pressure of the coil spring before you unbolt the motor?

[68 RT]

Aren't you supposed to stick a bolt through the mechanism so it won't release under the pressure of the coil spring before you unbolt the motor?

Yes, make sure you do that or you could lose fingers or worse.

[euroZ06]

Can u elaborate on ticking what where so i dont loose fingers?

[Dino]

There are holes in each scissor arm so you're supposed to line up two and stick a bolt or something through so the arms cannot move.  That also makes it easy to reinstall the motor afterwards, all you do is slightly move the mechanism up or down to take the pressure off the bolt so you can remove it.  The problem is that you can't move the window up at this time so you may not be able to line them up.  In any case, the object is to make sure the arms won't move when you unbolt the motor so you may be able to put a few vise grips on it or block the arms in some other way.  Can you post a picture of what the mechanism looks like at this time?  That will give us a better idea of what needs to be done.

[euroZ06]

Ok gents. I asked my neighbor to help out (he is in process of restoring an old mopar)... So we took out the motor, but didnt block off the mechanism in any way... So the whole thing kind of came apart further more, after we took out the motor, we connected it to the battery and the motor works both up and down... Connected it back to the switch and it doesnt go up. So, my assumption is that something wrong with the switch.any advice? Once again, this is passenger side. Window wont go up if i use either the driver side, nor the passenger side switch. It does work down. The motor works. How do i diagnose from there? Is passenger window switch bad? If so where do i get one? How do i put everything back together?

I really appreciate all the help. Im 29 and never worked on an old car like that, so everything is new to me.

[Dino]

Since both switches do not move the window up, the problem may lie with the wiring.  Do you have a wiring diagram for it? You'll be able to see how the power runs to the motors.  To test the switches put an alligator clip or temporary wire on the switch and run it to whatever can accept power just to see if they work, if they do then there is a break in the wiring somewhere.  Either way, this should not be a hard fix but you need to figure out exactly what it is that is interrupting power.

[A383Wing]

power for the motor must go through both switches in order for motor to work If one of the switches are not making contact in the neutral position, the motor will not work with either switch

may I strongly suggest that if you do not have a service manual for your car, get one if you are gonna be working on anything for the car, especially electrical

[euroZ06]

Ok, update.

Took the  test light and started checking connections. All seem to work fine, even the connection that goes to the motor, BUT when motor is connected and you press "up", the whole switch panel lights up. Something is shorting in the motor. Without the motor connected, pressing "up" with motor disconnected and only the proper connections light up. So i took the motor apart to try and figure it out, and tried to put it together, and broke some things in there so need a new motor. Will autozone have one?

Funny thing though, when motor is all disconnected and is connected straight to the battery it works up and down...

[euroZ06]

Also, how do i put the whole thing back together? 

My window is up right now, but the whole assembly crumbled when i took out motor...

[euroZ06]

Finally, im having hard time finding new motor... My part number is 2520902

Pats geek has a new one when i put in my car info, but the part number is different

Same goes for carid.com. http://www.carid.com/1973-dodge-charger-electrical-parts/a1-cardone-power-window-motor-25218794.html

Would those work or do i need to look by exact part number??

[A383Wing]

Also, how do i put the whole thing back together? 

My window is up right now, but the whole assembly crumbled when i took out motor...

scroll up and see the second half of reply #8

[euroZ06]

Also, how do i put the whole thing back together? 

My window is up right now, but the whole assembly crumbled when i took out motor...

scroll up and see the second half of reply #8

Thanks, but in the day and age of internet and forum, i figured id ask the question here before going out and buying old manuals. Forums are a great resources, with collectively great minds. Maybe someone has instructions laying around and could provide them. Answer of "go find it in a book" is highly appreciated and a well understood concept, but not what i was asking for.

I have ordered a window motor from carid, different part number, but they told me it should work. I have made an appointment at the local shop to reinstal the window mechanism. They told me it should take an hour ($100 or so).

Thanks all for the help.

[six-tee-nine]

OK, but waiting all the time for answers from other guys can be aggrevating and time consuming. You can also get multiple answers from muliple people.

With a manual around the only thing you needed to do was grab a multimeter and that manual and you would have probably found your problem 5 days ago without tearing apart your car and chewing up a maybe perfectly working window motor.


Most guys out here only try to give you advise the best they can.

[Dino]

Be aware that the new motor will fit the window mechanism, but may have a different style body so if there's a bracket on the end holding the motor to the frame, this may no longer work.  If it doesn't work out you can always return it and get a used motor from ebay.  These things were used on several models spanning several years.

[A383Wing]

you don't have to go out and buy "old manuals"...you can download manuals from the web and have them right in front of you...but in this day of internet and forums, you should have found them already instead of waiting in front of your computer screen for an answer to a simple electrical DC reversible motor problem.