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I have replaced or rebuilt almost everything in this vacume system. I have just finished rebuiling my headlight actuators and replaced all the springs and they work fine but my wiper door stays up all the time. I don't know if it has anything to do with my wipers only working when I push in on the switch for washer or not. I have traced all the hoses by the way they are all new, can't hear a leak anywhere, any idea's where to look? About the only thing not new is the wiper relay valve behind the dash and the relay under the console.
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Former Member
Send PMMounds View, MN - USA
Joined: 5/24/2007
Posts: 1034
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
Search the archives for articles on this. There is a troubleshooting guide somewhere. If not, there is one that sells for $12.00. You get step by step instructions.
Larry
Larry
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Lifetime Member
Send PMCOPPERAS COVE, TX - USA
Joined: 7/6/2002
Posts: 475
Vette(s): 1972 corvette stingray convertible
2007 coupe
I had that problem, it would pop up when I gave it the gas. Switch located on passenger side wiper arm under the door. Check on that switch.
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That switch was missing on the car when I started so that switch is new, not that that means it works. You are talking about the vacume switch that the wiper arm comes down and makes contact with right? I got a troubleshooting guide when I ordered the new vacume hoses from Doc Rebuild but I am only about 1/2 way through it. I will press on, thanks. By the way fp vetter72 thats a nice looking blue 72 convertable. I'm kinda partial to'em.
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Lifetime Member
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Send PMModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22718
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Lonnie...it sounds more like an electrical deal than vacuum at this point. The wipers not working kinda points in that direction.
I can e-mail ya some stuff that might help. It covers the vac and electrical stuff on the wiper system.
I can e-mail ya some stuff that might help. It covers the vac and electrical stuff on the wiper system.
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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Joel, got all the stuff ya sent. Very helpful info. Hopefully get to work on this the next day or two.
Thanks Joel.
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Lifetime Member
Send PMCOPPERAS COVE, TX - USA
Joined: 7/6/2002
Posts: 475
Vette(s): 1972 corvette stingray convertible
2007 coupe
Your blue vert is pretty nice also hope you get the problem fixed.
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in Forum: C3 Electrical, Body and Interior
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