my 72 Vette wiper door closes on wipers at different intervals
08-12-2018, 12:49 PM
#1
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my 72 Vette wiper door closes on wipers at different intervals
!972 Corvette wiper door closes on wipers at different positions. I have to keep trying to park them multiple times to get them close to parking in the full close position but rarely can get them in the perfect spot. Door closes quickly and does not wait until the wipers are fully down. Any suggestions as to the culprit.
Last edited by DC1972; 08-12-2018 at 12:54 PM.
08-12-2018, 10:16 PM
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08-12-2018, 10:43 PM
#5
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!972 Corvette wiper door closes on wipers at different positions. I have to keep trying to park them multiple times to get them close to parking in the full close position but rarely can get them in the perfect spot. Door closes quickly and does not wait until the wipers are fully down. Any suggestions as to the culprit.
08-13-2018, 08:26 AM
#6
Melting Slicks
Sounds like it might be caused by the wiper door safety switch, which is underneath the passenger side wiper arm near it's pivot point. It tells the wiper door that the arms are parked and it's okay to close.
08-13-2018, 11:06 AM
#7
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I was thinking it was probably the safety switch also since it only close on the wiper arms when I turn the wipers off and not any other time. Is the safety switch vacuum controlled or electrical?
08-13-2018, 07:22 PM
#8
Race Director
Also, Tex, there is a one-way valve so you don't lose can vacuum when you hit the throttle. Yours is either blown or nonexsistant. Reminds me of school busses when I was a kid. Drivers had to lift off gas to make the vacuum wipers go.
Last edited by derekderek; 08-13-2018 at 07:22 PM.
08-13-2018, 07:31 PM
#9
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It is defiantly the safety switch under the wiper door, passenger side. It pretty much fell apart once I got to it. Does anyone know if the heater hot water shut off vacuum valve for 77 to 79 is the same as the wiper vacuum safety switch on the 72. they both look identical except the hot water valve is half the price for the one that is made in the USA.
08-13-2018, 08:54 PM
#10
Melting Slicks
By the way, does the switch under the steering column work? The pull down **** on the right side of the large round **** controls the vacuum door: if you pull it down (with the car running), the vacuum door should open and stay open. The round **** turns the wipers off (so that you can stop them at the top of the cycle when you need to change the blades).
Last edited by kansas123; 08-13-2018 at 08:58 PM.
08-13-2018, 10:36 PM
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It is a vacuum switch.
By the way, does the switch under the steering column work? The pull down **** on the right side of the large round **** controls the vacuum door: if you pull it down (with the car running), the vacuum door should open and stay open. The round **** turns the wipers off (so that you can stop them at the top of the cycle when you need to change the blades).
By the way, does the switch under the steering column work? The pull down **** on the right side of the large round **** controls the vacuum door: if you pull it down (with the car running), the vacuum door should open and stay open. The round **** turns the wipers off (so that you can stop them at the top of the cycle when you need to change the blades).
does the black **** on the left do anything?
I have had my hands full rebuilding the front suspension and steering componets. Now that that that is done I have finallyt been able to get it on the road and started on other fixes.
Last edited by DC1972; 08-13-2018 at 10:39 PM.
08-14-2018, 04:44 AM
#12
Melting Slicks
Not certain as I have already removed the wiper safety switch. For whatever reason I didn't realize the pull **** on the right moved, I was only aware on the **** to turn off the wipers. Still learning...
does the black **** on the left do anything?
I have had my hands full rebuilding the front suspension and steering componets. Now that that that is done I have finallyt been able to get it on the road and started on other fixes.
does the black **** on the left do anything?
I have had my hands full rebuilding the front suspension and steering componets. Now that that that is done I have finallyt been able to get it on the road and started on other fixes.
08-17-2018, 05:40 PM
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