Vacuum headlights???
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Joined: Aug 1999
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From: Perth,Western Australia,Australia
Re: Vacuum headlights??? (Tom454)
The relays wear out internally... and there is a vacuum loss internally. This causes them to operate at different rates.
The best fix I have fouind is to disassemble the relays and cut a groove in the piston where an o-ring can be fitted. Re-assemble with a non-petroleum based grease and they work even and better than new.
New relays seldom have the same reaction time. Rebuilt o-ringed relays tend to operate faster and at a more constant rate.
The job is a little tricky because you have to cut the relay with a dremel to get it apart, and, you have to have a surgeons touch to avoid ruining the piston when you cut the groove in it. Not many people have the ambition/skill/patience to do this job, but when done correctly, it works great.
The best fix I have fouind is to disassemble the relays and cut a groove in the piston where an o-ring can be fitted. Re-assemble with a non-petroleum based grease and they work even and better than new.
New relays seldom have the same reaction time. Rebuilt o-ringed relays tend to operate faster and at a more constant rate.
The job is a little tricky because you have to cut the relay with a dremel to get it apart, and, you have to have a surgeons touch to avoid ruining the piston when you cut the groove in it. Not many people have the ambition/skill/patience to do this job, but when done correctly, it works great.
I have been checking all the components according to the following web site. http://www.corvette-101.com & they all seem to work as per the web site.
But if It turns out to be a relay,I will have a go at the repair as you mentioned.
Thanks Neil.
