C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Window problems

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Old Jun 25, 2014 | 05:17 PM
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Default Window problems

Had to leave my car out for a couple of nights and yesterday I noticed that the window looked down a little. Today I went to move my car and it was definitely down about an inch or so. When I tried to lower it would not go down. I pushed on it and it reluctantly went down. It shot right up and again would not go down. There is plenty of grease on the tracks. After a few tries now it won't move either direction.

I think someone may have tried to pry it down and bent something. I have the panel off but can't see anything that looks like it would cause such a bind and I heard no bad noises when it was working.

Any ideas?
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Old Jun 26, 2014 | 08:53 AM
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Check if you have power at the window lift motor while trying to operate window, a test light or multimeter will work. I'd guess the lift motor is failing, my kids pry'd the window down in my cavalier when it was a year old, it did bend the regulator slightly but it somehow ruined the motor too. I hope you have a bad switch tho, I just had my driver door apart and its a pain. good luck
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Old Jun 26, 2014 | 12:01 PM
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What year Vette??
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Old Jun 26, 2014 | 12:04 PM
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What year and which window?
84-85-86's had different window regulators than 87-96



BTW You've been around here for a while,
When are you going to fill in your profile info?




.

Last edited by JrRifleCoach; Jun 26, 2014 at 12:14 PM.
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Old Jun 26, 2014 | 01:46 PM
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92 driver side.

Switch appears to work because I can help the window down and it raises itself.

It worked perfectly up to this incident. No gradual worsening of any problems.
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Old Jun 26, 2014 | 01:47 PM
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My profile shows 92 convertible and I don't tweet or any of that other stuff.
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Old Jun 27, 2014 | 04:41 PM
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OK the pass window regulator is a scissors type.
The track or mechanical is possibly bent.
Time to remove the panel and take a look see at whats gone wrong.
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Old Jun 28, 2014 | 10:40 AM
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Now it won't move at all, not even a try. Anyone have a tutorial on pulling the window motor?
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Old Jun 28, 2014 | 11:09 AM
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Should be the same for your '92:

https://www.corvetteforum.com/articl...motor-1993-c4/
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Old Jun 28, 2014 | 11:12 AM
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Before you go ripping into the door its time to test a few things first. -You'll save time, $$$ and your sanity.

Get out on the web and read up on this problem and do your research. It could be just a switch going bad or a motor that is failing. Consult the FSM manual and read through the window trouble shooting section.

I had this same issue about 10 years ago on my 94. I trouble shot the issue one step at a time. -Diagnosis? The window motor was failing.

First take a multi meter and test the window switch. Then test the motor itself. Think small problem first before jumping to a big problem.

If you get stuck jump on the forum and ask questions.

Good luck!
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