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

1986 Window Apparently Off Track

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Old Jul 29, 2014 | 03:51 PM
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Default 1986 Window Apparently Off Track

We're changing the dew sweeps and inner window felts on my '86 - and the window decided to come off track the other day. Initially, it would still go up and down along with the motor, though it had to be helped downward at times to get with the motor - but the other day I guess the window made an especially long fall to catch up on the downward path... and now the thing is obviously entirely off track. Anyone have an idea what's going on here? The motor's still working. What should we look for? And what might we need to remove to get at it? Thanks!
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Old Jul 29, 2014 | 06:20 PM
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Found what's doubtless the key problem - there's a toothed strap in there, and it's broken up around it's higher mounting point. So - that obviously needs to be replaced. (By the way, the one in the passenger-side door is black; the toothed strap on the driver's side - the broken one - is white plastic. So... one's obviously been replaced.) So... I am supposing that inner-door steel needs to be removed and so-on. Where do we go from here? Many thanks in advance!
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Old Jul 31, 2014 | 10:00 PM
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The window ribbon can be obtained at Auto Zone and the like. You will find it in the "Help" section of parts. You will probly have to cut it to length but it isnt hard. Pull the door panel and the inner metal panel to access the window regulator assembly. I am not sure if you have to take the assembly out to replace the ribbon but I would imagine you would. My '85 has been updated to the more reliable scissor style regulators so I cant be more helpful than that.

Good luck!
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Old Jul 31, 2014 | 11:19 PM
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Thank you for the reply. Ordered the ribbon for the '86 off eBay - but have been wondering if we ought to just go the scissor route. It's said to be more reliable, and unless I am mistaken, it is also a good bit easier to install.

Again, thanks!
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Old Aug 1, 2014 | 01:59 AM
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Originally Posted by Sean Brian Kirby
Thank you for the reply. Ordered the ribbon for the '86 off eBay - but have been wondering if we ought to just go the scissor route. It's said to be more reliable, and unless I am mistaken, it is also a good bit easier to install.

Again, thanks!
It's also a LOT faster, which was worth the cost to me. I upgraded the passenger window after upgrading the driver's side and finding out how much better it was.
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Old Aug 1, 2014 | 06:09 AM
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Since the "scissor" can be made shorter it is easier to get in and out. As I recall I had a hard time with getting the old ribbon one out. A lot more expensive than the ribbon but as Cliff mentioned, the window does move faster.
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Old Sep 7, 2014 | 06:26 PM
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Went ahead and replaced the ribbon setup with a scissor unit I found on eBay. Installing it was still a bit of a job, but I am glad to have it in. Window speed isn't a huge issue with me - but yeah, this thing is a bit faster.
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Old Sep 8, 2014 | 05:53 AM
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Originally Posted by Sean Brian Kirby
Went ahead and replaced the ribbon setup with a scissor unit I found on eBay. Installing it was still a bit of a job, but I am glad to have it in. Window speed isn't a huge issue with me - but yeah, this thing is a bit faster.
Congrats on the fix. You will be changing the other one before long because you will be envious that one moves faster that the other, lol.
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Old Sep 9, 2014 | 12:17 AM
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Originally Posted by HlhnEast
Congrats on the fix. You will be changing the other one before long because you will be envious that one moves faster that the other, lol.
Naw, I am hardly keen to take a C4 door apart anytime soon. (And both had been apart, anyway, as we were replacing the dew sweeps.) Let's just say it'll be a job accomplished only when it must be.
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Old Sep 9, 2014 | 02:21 AM
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The slowness of the ribbons bothers me not at all.
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