Yes another headlights Question...Help?
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
Yes another headlights Question...Help?
The headlights of my '73 are very slow coming up and down. They both come up and down so I don't think is the Actuators.
The Relays are aftermarket , the filter is clean and the vacum hoses seem to be ok.
The Right Actuator however is missing the little black boot and the one on the left looks old.
Funny part is the right headlight seems to be working better!
Should I replace or reseal the oem Actuators or replace the Relays?
Help
)
Thanks
The Relays are aftermarket , the filter is clean and the vacum hoses seem to be ok.
The Right Actuator however is missing the little black boot and the one on the left looks old.
Funny part is the right headlight seems to be working better!
Should I replace or reseal the oem Actuators or replace the Relays?
Help
)Thanks
Last edited by Cattiva73; Sep 18, 2013 at 03:40 PM.
Drifting
Joined: Jul 2006
Posts: 1,259
Likes: 154
From: Deplorableville Nebraska
Do yourself a giant favor ($$), and test your relays and actuators first. I can almost guarantee you if either one looks "old", or is missing a boot, you probably have a vacuum leak there. There have been many posts here on how to test them. If you do not have access to a mityvac or similar vacuum pump, many parts stores loan them out.
If you need more info, here's a good place to start..
http://forums.corvetteforum.com/c3-t...tem-works.html
If you need more info, here's a good place to start..
http://forums.corvetteforum.com/c3-t...tem-works.html
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
Do yourself a giant favor ($$), and test your relays and actuators first. I can almost guarantee you if either one looks "old", or is missing a boot, you probably have a vacuum leak there. There have been many posts here on how to test them. If you do not have access to a mityvac or similar vacuum pump, many parts stores loan them out.
If you need more info, here's a good place to start..
http://forums.corvetteforum.com/c3-t...tem-works.html
If you need more info, here's a good place to start..
http://forums.corvetteforum.com/c3-t...tem-works.html
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
You can test each item with a vacuum pump. I did a video to show you how.
1968-1982 Corvette Headlamp Vacuum Diagnostic Help.
1968-1982 Corvette Headlamp Vacuum Diagnostic Help.
Thread Starter
Racer
Joined: Feb 2012
Posts: 462
Likes: 0
From: Virginia
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Since both actuators work and at about the same speed, your problem is most likely worn seals in the vacuum relays which send the vacuum to those actuators.
After actuating them on your car (engine running), get a can of WD-40 or spray engine oil; pull the center hose off of each headlight vaccum relay and shoot a bit of oil/WD-40 into the relay. Then, place the hose back on and actuate the headlights again. If the headlights pop up just fine, the seals are worn on the relays.
There is no rebuild kit available for them. You will likely have to purchase new ones to get the headlights working properly.
After actuating them on your car (engine running), get a can of WD-40 or spray engine oil; pull the center hose off of each headlight vaccum relay and shoot a bit of oil/WD-40 into the relay. Then, place the hose back on and actuate the headlights again. If the headlights pop up just fine, the seals are worn on the relays.
There is no rebuild kit available for them. You will likely have to purchase new ones to get the headlights working properly.
Racer
Joined: Feb 2007
Posts: 271
Likes: 25
From: Buena Vista Colorado
Since both actuators work and at about the same speed, your problem is most likely worn seals in the vacuum relays which send the vacuum to those actuators.
There is no rebuild kit available for them. You will likely have to purchase new ones to get the headlights working properly.
There is no rebuild kit available for them. You will likely have to purchase new ones to get the headlights working properly.
Corvette-101.com includes a relay repair procedure for the “dog bone” valves. Another repair method I used successfully for these valves can be found HERE.
Good luck!
Last edited by 78IndyPace; Sep 20, 2013 at 11:19 AM.
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