Wiper Door Problem
Thread Starter
2nd Gear
Joined: Sep 2011
Posts: 2
Likes: 0
Wiper Door Problem
I am currently having a problem with my wiper door on my 69 vette. It open and closes randomly. It does not matter whether the electrical wiper switch is on or off. Any help with this problem would be much appreciated.
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Thread Starter
2nd Gear
Joined: Sep 2011
Posts: 2
Likes: 0
Wiper Problem
I have replaced all the hoses and have also replaced the actuator at the wiper arm. I have not replaced the wiper door actuator itself. When I reverse hoses on the actuator (the red and the green) then the door will stay down but then it won't come up. While I am driving it just goes up and down randomly.
Le Mans Master
Joined: Jul 2006
Posts: 8,117
Likes: 104
From: charlotte north carolina
remember that these vaccum systems are designed to open when there is no vaccum on the control relay. i'd test the relay first. the O rings in the slide are probably at fault.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
If the check valve (in the main vacuum line off the intake fitting) is working properly, the likely culprit is the wiper interlock valve located below the right side wiper when it is parked. That switch lets the system know that the wipers are parked so that the door can be closed. If it is sending confusing signals to the system (due to internal seal leakage), the rest of the system will try to comply.
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Racer
Joined: Nov 2009
Posts: 423
Likes: 7
From: Utah
I have the same problem even though I put in a brand new valve. I knew it didn't hold vacuum well, but it was all I had. They aren't the best produced pieces. Someone (Roger?) has been experimenting with ways to make them seal better.
Edit: It was Roger
http://forums.corvetteforum.com/c3-t...le-piston.html
Last edited by shrekviper; Sep 22, 2011 at 11:35 PM.
