a simple headlight question :)
Thread Starter
Melting Slicks
Joined: May 2001
Posts: 2,700
Likes: 3
From: Lebanon KY
a simple headlight question :)
Lately, only one of my headlights will pop up. It will start to go up, but then fall back down. Is there a vaccum leak somewhere since it's trying to come up, or is it one of those acutator things? The other light goes up perfect. One other thing, while the car is off, neither headlight will go up or down. It's driving me crazy :crazy:
Safety Car
Joined: Jan 2001
Posts: 4,660
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From: South Central Louisiana
St. Jude Contributor
Re: a simple headlight question :) (corvettemaster)
Take hose for hose off of the vac relay that does work and hook up to the actuator that doesn't. If the act works on that relay than the other relay is bad. If it doesn't, then your actuator is leaking, which is very common and fairly easy to repair. Let us know what you find.
Drifting
Joined: Aug 2002
Posts: 1,731
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From: Marietta Ga.
Re: a simple headlight question :) (corvettemaster)
When car is off, your vac tank is suppose to supply about two ups and downs. You have a bad check valve or leak in the tank, thus no reserve vaccum, I'am guessing.
Melting Slicks
Joined: May 2002
Posts: 2,508
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From: Wisconsin
Re: a simple headlight question :) (72GACRZR)
When car is off, your vac tank is suppose to supply about two ups and downs. You have a bad check valve or leak in the tank, thus no reserve vaccum, I'am guessing.
Thread Starter
Melting Slicks
Joined: May 2001
Posts: 2,700
Likes: 3
From: Lebanon KY
Re: a simple headlight question :) (72GACRZR)
When car is off, your vac tank is suppose to supply about two ups and downs. You have a bad check valve or leak in the tank, thus no reserve vaccum, I'am guessing.
Also, since the one headlight does try to pop up, I figure it is either the acutator going bad, or it is leaking. I read, and the relays basically tell the headlights when to go up and down. So since the headlight does try to go up, its probably not the relay.
Melting Slicks
Joined: Aug 2000
Posts: 2,310
Likes: 1
Re: a simple headlight question :) (corvettemaster)
Here's a good article on replacing the headlight actuator seals (a very common problem)... http://www.zip-corvette.com/has.htm
I imagine it could still be a relay even though it tries to come up, and as stated switching the vacuum lines from the relays around so driver's relay tries to open passenger light and vice-versa is a good test (of course so is a vacuum gauge if you have one).
I imagine it could still be a relay even though it tries to come up, and as stated switching the vacuum lines from the relays around so driver's relay tries to open passenger light and vice-versa is a good test (of course so is a vacuum gauge if you have one).
