headlights vacuum arghhh
Thread Starter
Racer
Joined: Nov 2009
Posts: 486
Likes: 1
headlights vacuum arghhh
80' vette
Are there steps to diagnosing the headlights vacuum. They worked okay then I did the LS1 conversion. Had the lights working at the shop and the next day they never would open. I would not be surprised if that shop screwed something up. They were dumb****
The vacuum lines and all that was installed new ~5-6 years ago. The car has sat for the past year and half.
I have the two diagrams from willcox but everything looks correct.
Currently the driver side lamp will slowly raise... slowly and sometimes not at all.. The passenger side needs to be manually lifted since it only raises enough to put your finger in it to raise it.
Are there steps to diagnosing the headlights vacuum. They worked okay then I did the LS1 conversion. Had the lights working at the shop and the next day they never would open. I would not be surprised if that shop screwed something up. They were dumb****
The vacuum lines and all that was installed new ~5-6 years ago. The car has sat for the past year and half.
I have the two diagrams from willcox but everything looks correct.
Currently the driver side lamp will slowly raise... slowly and sometimes not at all.. The passenger side needs to be manually lifted since it only raises enough to put your finger in it to raise it.
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
This should help:
http://forums.corvetteforum.com/c3-t...tem-works.html
Keep the shiny side up!
Scott
http://forums.corvetteforum.com/c3-t...tem-works.html
Keep the shiny side up!
Scott
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Before I understood how the headlight actuation system worked on C3s, I thought it was the stupidest system ever designed, but now that I understand it, I am impressed by how simple and ingenious it is. Welcome to the club!
keep the shiny side up!
Scott
keep the shiny side up!
Scott
Racer
Joined: Feb 2007
Posts: 271
Likes: 25
From: Buena Vista Colorado
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Malfunctioning headlights are probably the #1 topic on this board and there is an excellent sticky on it as you've seen.
Too bad it's gotten buried in a 'group sticky' at the top of page. Maybe the kind and gentle mods could move it back out on it's own?
Too bad it's gotten buried in a 'group sticky' at the top of page. Maybe the kind and gentle mods could move it back out on it's own?
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Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
I bought my '72 in '95 and of course the headlights never worked right, so a vacuum relay later and some canister 'witches hat' seals, all installed they worked OK, for a vacuum system, but within a year they back to one up....other straining/slow.....two new witches hat seals, lasted maybe 18 months, at this point I met up with Chris McDonald at McSpeed just down the street from me, and so he was working on the electric conversion....I was waiting for his work to be done, when my decision was made, a damn DEER ran out at night, and claimed both headlight assy's....just junk.....so I went fixed lights as the cheepest solution.....by FAR.....
I found the only way to keep the witches hats sealing on the shaft was to use a thin wire/small tie wrap to keep the rubber from splitting....
that's how I bailed out the second set for some time after until the damn DEER ......
I found the only way to keep the witches hats sealing on the shaft was to use a thin wire/small tie wrap to keep the rubber from splitting....
that's how I bailed out the second set for some time after until the damn DEER ......
