Rear Window
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Senior User
Joined: Jun 2005
Posts: 174
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From: Palo Alto, CA
Rear Window
Okay, so I know this is a NOTORIOUS problem on the broncos but my rear window on my 90 Bronco is a pain in MY rear! The problem is that it won't go down, its stuck up, which is better than the time it was stuck down in the rain. Anyway, I've replaced the motor twice and each time i did that it would work for a little bit then quit. This last time I put the window down to load a bike into the back and then once I put it up again it just stayed up! Are there any ideas to what my problem could be, faulty wiring? Bad rubber around the window? Anything at all would be a great help! Because changing that motor bites! Almost lost my hand doing it onetime too! Thanks
-James
-James
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
There are several things that COULD be the problem. Some model years are prone to having the wiring harness between the gate and the jamb get pinched or broken wires. Not sure why, Ford may have addressed the problem sometime during the production run. There is also a safety interlock switch on the driver's side latch that unless it is engaged, will not let the window move at all... period. An older worn striker bolt, a loose latch, or misaligned latch can keep the interlock switch from engaging. Try leaning on the driver's side of the gate while running the keyswitch and see if the window will move. IF thsi does turn out to be the problem, it requires some tinkering with the latch/striker bolt alignment and or replacement of one or both of them. The interlock switch itself could well be the culprit too. Unfortunately, ALL of these things are in a location that is not easily accessible with the window up and the gate closed.
Junior User
Joined: Feb 2003
Posts: 94
Likes: 0
From: Ohio
When my rear window wouldn't move, (I believe mine was down in the cold and rain) it turned out it was the interlock. I confirmed this by opening the access panel and jumpering the switch. Got it working with the jumper, I was able to take the Cub Scouts camping and afterward ordered a replacement from Jeff's and replaced it.
Senior User
Joined: Dec 2004
Posts: 460
Likes: 1
From: Edmonton, Alberta
Just this past summer after the 24 days of rain in New Brunsick, my rear window refused to move. After some huntin' around it ended up being the wiring connector in the bottom well of the tailgate. The spades were corroded and not conducting. I cleaned them up, added some di-electric grease and no problems since.
Woodler
Woodler
New User
Joined: Nov 2005
Posts: 14
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Of the four broncos I have had in the last 20yrs, when there has been a window issue it has been the motor pigtail connector being loose or dirty or the wiring section from the body to the tailgate shorted. I think someone said to remove the tailgate panel and apply 12v to the motor pigtail. If it doesn't move when connected then reverse your connections. Oneway moves it up, other down. 
I think I have actually had to replace a motor once. Guess I have been lucky not having any locking issues.
Jim
I think I have actually had to replace a motor once. Guess I have been lucky not having any locking issues.Jim
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