Window question

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Nov 21, 2007 | 10:52 PM

oaklands

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Instructor

Joined: Sep 2007

Posts: 145

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From: Morristown TN

Window question

I have an 88 L98. My drivers side window goes down fine, comes up fine until it is about 3-4" from going all the way up. It then slows down to a crawl but finally goes all the way up. The odd thing is, when I open the door and bring it up, it goes all the way without a hitch. Why would this happen? Is it a door alignment problem?

Thanks in advance for you help.

Keith

Nov 21, 2007 | 11:50 PM

C4DERF

Pro

Joined: Jan 2007

Posts: 514

Likes: 1

Quote:

Originally Posted by oaklands

I haven't had this problem with my C4 but I did have a similar problem with my 4th gen Firebird (94). It turned out to be the window regulator and motor. Once I replaced them the window worked just fine. Hope this helps.

Nov 21, 2007 | 11:54 PM

oaklands

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Joined: Sep 2007

Posts: 145

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From: Morristown TN

Quote:

Originally Posted by C4DERF

Thank you for the feedback. It seems strange that if the door is open it works fine. I will do some searching on the parts you recommended. Thanks again.

Keith

Nov 22, 2007 | 08:00 AM

geogolf

Drifting

Joined: Jun 2005

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From: brookville pa.

window

just a thought did you just replace you weatherstripping,[rear targa] mine does same thing hangs up on w/s it will loosen up down the road

Nov 22, 2007 | 11:14 AM

oaklands

Thread Starter

Instructor

Joined: Sep 2007

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From: Morristown TN

Quote:

Originally Posted by geogolf

just a thought did you just replace you weatherstripping,[rear targa] mine does same thing hangs up on w/s it will loosen up down the road

I haven't replaced it, but I will watch it close and see if that may be the problem. Thanks for the heads up.

Dec 8, 2007 | 09:03 AM

gking

Advanced

Joined: Jun 2007

Posts: 64

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From: Binghamton NY

C4 Window Problems

I am having the same problem with both windows not going all the way up on my 89. I also replaced the weatherstrip and that is what is causing the problem. As soon as the window gets into full contact with the weather strip, it will not go up any further unless I open the door. The window is in the correct adjustment position.

Was going to lubricate the rubber strip to see it it breaks in but would really like to get it working properly. With the door panels off, I see no adjustment to help the problem.

I am on the window bandwagon if anyone out there can think of a cure.

Thanks

Dec 8, 2007 | 09:13 AM

zr1fred

Race Director

Joined: May 2006

Posts: 10,691

Likes: 71

From: Phoenix Arizona

The cure is a new window motor, assuming you have the window adjusted properly. The bushings in the motor go, causing problems when tension is applied, and due to the shape of the window, it gets tighter at the top. At least this is generally the cause. You can try lubing the mechanism.