Headlight vacum help! (Are they supposed to do this??)
Thread Starter
Racer
Joined: May 2001
Posts: 367
Likes: 0
From: Toronto Ontario
Headlight vacum help! (Are they supposed to do this??)
Ok so far this is what I have done:
Replaced the actuators, with new seals and dust boots.
Replaced all the old hosing with new hosing.
But my passanger headlight always comes up first, follwed by the driver headlight next. Is this normal? I thought they were supposed to come up at the same time? What else should I try??
Thanks,
Mike.
Replaced the actuators, with new seals and dust boots.
Replaced all the old hosing with new hosing.
But my passanger headlight always comes up first, follwed by the driver headlight next. Is this normal? I thought they were supposed to come up at the same time? What else should I try??
Thanks,
Mike.
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Re: Headlight vacum help! (luvmy73)
I have never seen 2 lights come up at the same time. There are so many variables, vacuum line length, leakage at the cannister seals, tee leakage etc. etc. Let me know if you ever seen a C-3 Vette's lights come up at the same time.
Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
Re: Headlight vacum help! (Cali,77,L-82)
I have never seen 2 lights come up at the same time. There are so many variables, vacuum line length, leakage at the cannister seals, tee leakage etc. etc. Let me know if you ever seen a C-3 Vette's lights come up at the same time.
Even electrics don't always come up at the exact same time.
Instructor
Joined: Aug 2000
Posts: 202
Likes: 0
From: Omaha NE
Re: Headlight vacum help! (luvmy73)
Just be glad they both come up. I always have to shut my lights off before I pull in the driveway & garage. Otherwise, I have to high-idle it in the garage to get them shut.
Don
Don
Thread Starter
Racer
Joined: May 2001
Posts: 367
Likes: 0
From: Toronto Ontario
Re: Headlight vacum help! (Cali,77,L-82)
I guess you guys are right, they both go up and down with no apparent problems. Just bugs me that I spent so many hours cleaning, replacing and re-installing just to find out that they will never work "perfectly".
Thanks for the advice and info!
Mike.
Thanks for the advice and info!
Mike.
Le Mans Master
Joined: Apr 2002
Posts: 7,281
Likes: 5
From: Boston
Re: Headlight vacum help! (luvmy73)
When they were new, they worked right, but age is the problem of every thing.
I have the same problem with about 10 sec diference, and I'm looking to put some elec, stuff in. I have a neighbor who has them but he already bought it like that and doesn't let me "take it apart to see how it works" :D
Paul
I have the same problem with about 10 sec diference, and I'm looking to put some elec, stuff in. I have a neighbor who has them but he already bought it like that and doesn't let me "take it apart to see how it works" :D
Paul
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Burning Brakes
Joined: Mar 2002
Posts: 1,102
Likes: 0
From: Montreal QC
Re: Headlight vacum help! (luvmy73)
My passenger side pops up first, when it's totally up then the drivers side start to pop slowly... I'll have to check the lines for leakege etc. Looks kind funny though to get them up slowly and one by one... ;)
I know one -73 which lights pop up almost at the same time, lights also come up very fast... This is kind strange because the hoses are guite old, maybe not original but old anyway...
I know one -73 which lights pop up almost at the same time, lights also come up very fast... This is kind strange because the hoses are guite old, maybe not original but old anyway...
Pro
Joined: Aug 2001
Posts: 667
Likes: 3
From: College Station TX
Re: Headlight vacum help! (luvmy73)
Even the NCRS performance verification test - which is supposed to assure that every thing works as GM intended - allows for some reasonable separation. I forget the exact wording, but I think they should be in motion at the same time. I don't they have to start at the same time or go at exactly the same rate, but they have to both be moving at once.
Burning Brakes
Joined: Jul 2001
Posts: 1,160
Likes: 0
From: Ajax Ontario
Re: Headlight vacum help! (Don Schuette)
I agree with Don.....mine come up with the driver one very slightly ahead of the passenger one. That may or may not be the way they should be, but basically they go up and down on command and that's all that really matters to me.
Team Owner
Joined: Jun 2001
Posts: 23,375
Likes: 1,065
From: Virginia USA
Re: Headlight vacum help! (68shark)
Mine come up at the same time but my passenger side lags behind by about a half a second. No problem and all my hoses and actuators are original. I guess I am just lucky.
John
John
Burning Brakes
Joined: Mar 2002
Posts: 803
Likes: 0
From: South San Francisco CA
Re: Headlight vacum help! (luvmy73)
The headlights usually have some plastic protectors that you can see through your grill. These protector/covers sometimes warp and the light gets caught...kind of stuck.... when it opens. Mine did this until I took a small, black wire tie and drilled a little hole in the middle of the cover and wiretied it to the grill. I'm not sure if that's your problem...but it was mine.
Melting Slicks
Joined: Jun 2001
Posts: 2,340
Likes: 2
From: Moro IL
Re: Headlight vacum help! (theandies)
Mine come up at the same time but my passenger side lags behind by about a half a second. No problem and all my hoses and actuators are original. I guess I am just lucky.
John
John
:cheers:
Pat Kunz
Melting Slicks
Joined: Jan 2001
Posts: 2,187
Likes: 0
From: Rotterdam
Re: Headlight vacum help! (73 LS-4)
Mine are different every day....sometimes both at the same time,sometimes driversside first,sometimes passengerssite..... :crazy:
Like someone said before,they do come up,thats all that matters to me......
Strang enough they DO close at the same time? :crazy:
Like someone said before,they do come up,thats all that matters to me......
Strang enough they DO close at the same time? :crazy:
Burning Brakes
Joined: Aug 1999
Posts: 774
Likes: 0
From: Palatine IL
Re: Headlight vacum help! (luvmy73)
I know mine, take their sweet time, but I can't find, or see a sign, of any bind, or nasty grind, they don't finish at the same time, and that's just fine.
Man, I've been on the forum too long today. :crazy:
Man, I've been on the forum too long today. :crazy: