late C4 headlight motors run 5 seconds
Thread Starter
Acct suspended by request 6 November 2012
Joined: Feb 2005
Posts: 33
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From: South Daytona Florida
late C4 headlight motors run 5 seconds
'92 Corvette - when the headlights are turned on or off, the headlight motors continue to run for about 5 seconds AFTER they are all the way
open or all the way closed. Also, when the parking lights are turned on then off, both motors will run for about 5 seconds (doors do not move).
I suspect the headlight control module but I would like to get confirmation before I spend the $$$ to replace it.
Thanks, Bob
The plastic bushings in the driven gear was the problem. I have put together a set of instructions to replace the bushings in a 1992 Corvette. The directions are from hood up to hood down. The file, including pictures, is 1.3meg. Request the file from redvette100@hotmail.com
open or all the way closed. Also, when the parking lights are turned on then off, both motors will run for about 5 seconds (doors do not move).
I suspect the headlight control module but I would like to get confirmation before I spend the $$$ to replace it.
Thanks, Bob
The plastic bushings in the driven gear was the problem. I have put together a set of instructions to replace the bushings in a 1992 Corvette. The directions are from hood up to hood down. The file, including pictures, is 1.3meg. Request the file from redvette100@hotmail.com
Last edited by red86vet; Jan 16, 2007 at 04:04 PM. Reason: save time from having to look at all the postings.
Le Mans Master
Joined: Aug 2002
Posts: 6,080
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From: Clearwater FL
St. Jude Donor '06
You need to replace the bushings in the gear assembly. Mine were completely gone and had the same symptoms. $15 fix. No need to get the bronze gears mine were fine. Check out midamerica.
Thread Starter
Acct suspended by request 6 November 2012
Joined: Feb 2005
Posts: 33
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From: South Daytona Florida
Thanks for the replies. I have the bushings and they are being installed. I have had some problems with the instructions and as a result I had to remove the armature from the aluminum case as one of the armature cover screws snapped off and I had to have it drilled and retapped. Getting the armature cover mated to the aluminum housing looks to be a real chore because of the brush springs.
Team Owner
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From: Fort Knox, KY
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Yup, as others have said, it's your Delrin bushings. They turn to dooty typically within 8 to 10 years of normal operation.
Thread Starter
Acct suspended by request 6 November 2012
Joined: Feb 2005
Posts: 33
Likes: 0
From: South Daytona Florida
Thanks for the replies. I have the bushings and they are being installed. I have had some problems with the instructions and as a result I had to remove the armature from the aluminum case as one of the armature cover screws snapped off and I had to have it drilled and retapped. Getting the armature cover mated to the aluminum housing looks to be a real chore because of the brush springs.
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
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In most cases, you don't need to remove the main gear shaft anyway. Just the large plastic gear that drives it. I was able to tap the gear out with a small hammer, insert the new bushings, re-install the main gear, then screw the motor housing cover back on.
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