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Just purchased a 69 and the wipers/wiper door is not working. The first thing I did for the wiper door was replacing the Wiper Door Vacuum switch, the Wiper Vacuum Actuator Relay, and the Vacuum Hose Check Valve. I do not see a Vacuum Hose Filter. Wiper door would still not open.
I then replaced the Wiper Door Actuator End Plug and the Wiper Door Actuator Rod Seal in the Wiper Door Actuator. The door opened several times, however, the last time the door closed, it closed hard and wouldn’t operate again. I noticed that the Wiper Door Actuator Rod Seal had blown/ripped. The old one was the same way when I removed it. Any suggestions on why the Rod Seal has blown and any suggestions on what to look for in getting the wipers to work. Nothing happens when I try to activate the wipers.
You need to push it up far enough on the shaft so it doesn't stretch along it full travel open or closed.....looks like the boot stretched out and ripped.
The wipers are fun......first you must verify the power is getting to the switch next to the actuator on the firewall, then you must make sure the foot for that switch is adjusted properly to activate the switch when the door is open. The design does not allow wiper power until the door is fully open. THEN, you must see if you have power through the switch.....to the wiper motor. Start there. There are several other things it could be but this is where you start. The switch is in your photo circled in red.
I am doing a diag on the whole system on a completely inop 72' this weekend......not my normal fodder, but I do know how so I told the fella ok. Nobody will pass inspection on his car until the wipers work.
Jebby
Last edited by Jebbysan; Sep 18, 2020 at 02:04 PM.
Thank your for the quick reply. I will be ordering a new Rod Seal and will try this again. Actually, I will be ordering 3 more, just in case it rips again . Their not that expensive. Though I'm not mechanically inclined, I'm determined to get this resolved. Hope to work on this next week when I receive them.
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
maybe try a little vaseline or like lube on the shaft to keep it from sticking to the rod and ripping.
For the wipers. the door has sto be all the way open to push in the switch and connect ground. If its new to you and you dont know if it hasever worked got the the willcox tech page and theres test for most components
Thank you. I did lube the shaft with and it still ripped. I'm thinking the Wiper Door Actuator is getting too much vacuum, therefore, blowing the seal. I'll check our the links that you sent.
Wiper door / Wiper
. Their not that expensive. Though I'm not mechanically inclined, I'm determined to get this resolved. Hope to work on this next week when I receive them.
