it just won't go down
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7th Gear
Joined: Jul 2013
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it just won't go down
My 69 wiper door just won't go down, changed out the valve that is activated by the wipers being in the off position but it just stays open. Trying for some input prior to digging in any further, any help appreciated. Wipers work no problem but door will not close, if you try to force it closed it resists. I am firing this guy up after a 18 year shutdown, when I first ran the wipers it opened and closed. Now it just opens, also when I bought the car in 73 the door never opened all the way, you would have to reach out the window and finish opening it in order to get the wipers to work, I lived with it for 26 years but I was younger then.
Thanks,
Don
Thanks,
Don
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Welcome to the forum!
This is the intro. area, you may want to post your question in the C3 general area of the forum for more opportunities for responses.
https://www.corvetteforum.com/forums/c3-general-119/
This is the intro. area, you may want to post your question in the C3 general area of the forum for more opportunities for responses.
https://www.corvetteforum.com/forums/c3-general-119/
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Moving this to the C3 Tech section.
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Joined: Sep 2006
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From: Westminster Maryland
Hi Don,
There are several things that could cause the wiper door to remain open.
The wiper door vacuum over-ride switch located below the steering column could be pulled. When the 'stalk' on this switch is pulled the door opens and remains open until the stalk is pushed back up.
The wiper door safety switch located in the wiper bay on the right side must be triggered by a lever on the wiper transmission that occurs only when the wiper arms are in the 'park' position. This prevents the door from 'crunching' down on the wiper arms that haven't parked. It could be defective even if just replaced.
The wiper 'relay' mounted on the right side apron could not be functioning so the vacuum signal to close the door isn't being sent to the door actuator.
The 'close' side of the wiper door actuator could be leaking.
Do you have a vacuum pump with a gauge (like a mity-vac) that you can use to begin testing these parts in order to see what's working and what's not?
Regards,
Alan
Vacuum over-ride switch
Vacuum safety switch and transmission lever.
Wiper door relay.
Wiper door actuator. The 'close' side is the forward side of the actuator with the red striped hose.
There are several things that could cause the wiper door to remain open.
The wiper door vacuum over-ride switch located below the steering column could be pulled. When the 'stalk' on this switch is pulled the door opens and remains open until the stalk is pushed back up.
The wiper door safety switch located in the wiper bay on the right side must be triggered by a lever on the wiper transmission that occurs only when the wiper arms are in the 'park' position. This prevents the door from 'crunching' down on the wiper arms that haven't parked. It could be defective even if just replaced.
The wiper 'relay' mounted on the right side apron could not be functioning so the vacuum signal to close the door isn't being sent to the door actuator.
The 'close' side of the wiper door actuator could be leaking.
Do you have a vacuum pump with a gauge (like a mity-vac) that you can use to begin testing these parts in order to see what's working and what's not?
Regards,
Alan
Vacuum over-ride switch
Vacuum safety switch and transmission lever.
Wiper door relay.
Wiper door actuator. The 'close' side is the forward side of the actuator with the red striped hose.
Last edited by Alan 71; Jun 30, 2017 at 06:42 AM.
