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Headlights???

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Old Aug 12, 2002 | 04:04 PM
  #1  
Corvettelvr73's Avatar
Corvettelvr73
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Racer
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From: Monroe North Carolina
Default Headlights???

When I push the car hard like up past 80 MPH going on to 100MPH my drivers side headlight flips up then goes back down or when I downshift to pass somebody very aggresivly. What causes this? It just looks bad when cars see it flip up only on one side of the car.
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Old Aug 12, 2002 | 04:06 PM
  #2  
flynhi's Avatar
flynhi
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Joined: Aug 2000
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From: Austin TX
Default Re: Headlights??? (Corvettelvr73)

Sounds like fluctuating vacuum as you accelerate. Could be leaky reservoir or headlight actuator or vacuum line.
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Old Aug 12, 2002 | 04:08 PM
  #3  
Sharky Guam's Avatar
Sharky Guam
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Joined: Feb 2002
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From: Guam
Default Re: Headlights??? (Corvettelvr73)

You have a vacuum leak. Whenever the vacuum changes, it affects your lights. Changes in engine rpm affect the vaccum. If you have a leak, your systems that rely on vacuum will also be affected.
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Old Aug 12, 2002 | 05:07 PM
  #4  
lbell101's Avatar
lbell101
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From: Casa Grande AZ
Default Re: Headlights??? (Corvettelvr73)

Your engine certainly produces variations in vacuum. That's normal.
The vacuum distribution system is supposed to stop those wierdit things from happening through the use of a check valve and canister. I'd start by checking them out. If those are good, I would think any vacuum leak in the system would have to be pretty large - certainly large enough to hear with the engine off.
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