Headlight sticks
09-27-2010, 10:09 PM
#1
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Headlight sticks
I have one headlight the sticks during retraction. It seems the left headlight sticks for 2 seconds after the right one has already retracted. And when it goes down, it goes down with some force. Any suggestions? I know nothing about how the headlight system works on the C3 Vettes...
09-28-2010, 03:56 PM
#3
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Hi s,
My suggestion would be to disconnect both hoses from the vacuum actuator so you can move the door open and closed by hand while sensing for any binding in the mechanism. If you feel it bind you'll need to find the location by looking up through the bottom of the front valance panel.
If you don't feel anything binding it's a problem with the vacuum actuator or vacuum relay.
I wouldn't touch the headlight mechanism or vacuum parts with out the AIM, the GM Chassis Service Manual, and a headlight trouble shooting guide.
Regards,
Alan
My bet would be either the 'close' side of the accuator leaks so it takes a moment for the vacuum to be strong enough to close the door,or the 'fully open' lock needs to be adjusted so the accuator can overcome it as quickly as it should.
My suggestion would be to disconnect both hoses from the vacuum actuator so you can move the door open and closed by hand while sensing for any binding in the mechanism. If you feel it bind you'll need to find the location by looking up through the bottom of the front valance panel.
If you don't feel anything binding it's a problem with the vacuum actuator or vacuum relay.
I wouldn't touch the headlight mechanism or vacuum parts with out the AIM, the GM Chassis Service Manual, and a headlight trouble shooting guide.
Regards,
Alan
My bet would be either the 'close' side of the accuator leaks so it takes a moment for the vacuum to be strong enough to close the door,or the 'fully open' lock needs to be adjusted so the accuator can overcome it as quickly as it should.
Last edited by Alan 71; 09-28-2010 at 04:00 PM.
09-28-2010, 06:46 PM
#4
Instructor
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Hi s,
My suggestion would be to disconnect both hoses from the vacuum actuator so you can move the door open and closed by hand while sensing for any binding in the mechanism. If you feel it bind you'll need to find the location by looking up through the bottom of the front valance panel.
If you don't feel anything binding it's a problem with the vacuum actuator or vacuum relay.
I wouldn't touch the headlight mechanism or vacuum parts with out the AIM, the GM Chassis Service Manual, and a headlight trouble shooting guide.
Regards,
Alan
My bet would be either the 'close' side of the accuator leaks so it takes a moment for the vacuum to be strong enough to close the door,or the 'fully open' lock needs to be adjusted so the accuator can overcome it as quickly as it should.
My suggestion would be to disconnect both hoses from the vacuum actuator so you can move the door open and closed by hand while sensing for any binding in the mechanism. If you feel it bind you'll need to find the location by looking up through the bottom of the front valance panel.
If you don't feel anything binding it's a problem with the vacuum actuator or vacuum relay.
I wouldn't touch the headlight mechanism or vacuum parts with out the AIM, the GM Chassis Service Manual, and a headlight trouble shooting guide.
Regards,
Alan
My bet would be either the 'close' side of the accuator leaks so it takes a moment for the vacuum to be strong enough to close the door,or the 'fully open' lock needs to be adjusted so the accuator can overcome it as quickly as it should.
