Cant find answer to window issue

nards444

Member
Feb 18, 2020
68
18
18
NY
87 GT. Power window. Window goes up and down. Issue is it sort of goes up crooked and seems loose going up and down. Pulled the door apart and pulled motor out. Motor seems fine, but has is full of hard grease rocks. Bushings at least one needs to be replaced. Before I take time and money to replace the whole unit any thoughts here. All teeth on the motor and the internal gear look ok, dont know if this is normal is the plastic gear inside once seated does have some play. Also window rolled all the way up pull motor and the window drops thought it was supposed to stay.

Do I need bushings and regrease only or maybe some parts thrown at it?
 
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after looking further the bushings in the motor were gone. Kind of think replacing those, guide bushings and grease job should fix it. ??
Yes, you need new window guide bushings. Very easy fix. The driver side usually gets twice or maybe even three times the use as the passenger's side. Dont be surprised if your power window motor goes out soon as well. Amazon sells an inexpensive one as compared to other Mustang product supporters.
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Power Window tips & tricks

Motor removal & replacement

Remove the door mounted speaker & the upholstery panel to gain access to the motor. There are 3 screws (5/16" hex head, I think) that secure the motor in place. Remove them and the motor comes out without any problems. Once you remove all the screws from the motor, and it falls away from the gear teeth on the arm for the glass, the glass will move up and down. You may need a helper to hold the glass once the motor screws are out, since the gear on the motor holds the glass from sliding up or down

Motor interchange
The motor is the same for left side or right side, only the gearboxes are different. If you can't find the complete assembly for the side you want, you can get either side and use the old gearbox on the new motor.

The window motor gearbox has 3 plastic rollers that are a safety clutch to prevent possible injury if the window is rolled up while something or someone is hanging out the window. The plastic rollers will often disintegrate into chunks of plastic and the window will no longer roll up or down. The motor runs, but the window does not move or only move a little.
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The Help! section of your local auto parts store will have the replacement plastic rollers.
See NAPA Window Regulator Gear Plug

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Napa p/n Balkamp 6651524

Cost is 9.49$

AutoZone and other auto parts stores see Dorman 74410 / Window Lift Motor Gear Kit
Cost is $7.99

Power Window Wiring Diagrams

Diagrams courtesy of Tmoss & Stang&2birds

Fuse panel and circuit breaker layout
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87-92 model cars power window wiring:

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93 model cars power window wiring:
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See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ - Wiring & Engine Info Everyone should bookmark