Windshield Wiper Issue
Thread Starter
Advanced
Joined: Apr 2016
Posts: 92
Likes: 5
Windshield Wiper Issue
Hello all,
I have a 1975 Coupe. I'm having some issues with my wind shield wipers and thought I would ask the forum.
Question 1: When I move the slider on to low the wipers just barely move up (about 1") then go back down. If I move the slider to High they usually work, very quickly, sometimes they just do the same thing. Also once when I moved them slider to off they kept doing their little 1" dance until I shut off the car and then restarted it. Does this seem like a switch issue or a wiper motor issue?
Question 2: The two wipers frequently run into each other on the down stroke in the middle of the windshield. If I get out an move one they will start going again. But frequently run into each other. Is there a way to adjust their timing or should I change out the passenger wiper to be a smaller size to avoid this?
I have a 1975 Coupe. I'm having some issues with my wind shield wipers and thought I would ask the forum.
Question 1: When I move the slider on to low the wipers just barely move up (about 1") then go back down. If I move the slider to High they usually work, very quickly, sometimes they just do the same thing. Also once when I moved them slider to off they kept doing their little 1" dance until I shut off the car and then restarted it. Does this seem like a switch issue or a wiper motor issue?
Question 2: The two wipers frequently run into each other on the down stroke in the middle of the windshield. If I get out an move one they will start going again. But frequently run into each other. Is there a way to adjust their timing or should I change out the passenger wiper to be a smaller size to avoid this?
Race Director
Joined: May 2006
Posts: 18,656
Likes: 2,561
your question 2 is answered by this adjustment procedure
http://repairs.willcoxcorvette.com/1...djust-picture/
http://repairs.willcoxcorvette.com/1...djust-picture/
Burning Brakes
Joined: Oct 2015
Posts: 781
Likes: 113
Hello all,
I have a 1975 Coupe. I'm having some issues with my wind shield wipers and thought I would ask the forum.
Question 1: When I move the slider on to low the wipers just barely move up (about 1") then go back down. If I move the slider to High they usually work, very quickly, sometimes they just do the same thing. Also once when I moved them slider to off they kept doing their little 1" dance until I shut off the car and then restarted it. Does this seem like a switch issue or a wiper motor issue?
Question 2: The two wipers frequently run into each other on the down stroke in the middle of the windshield. If I get out an move one they will start going again. But frequently run into each other. Is there a way to adjust their timing or should I change out the passenger wiper to be a smaller size to avoid this?
I have a 1975 Coupe. I'm having some issues with my wind shield wipers and thought I would ask the forum.
Question 1: When I move the slider on to low the wipers just barely move up (about 1") then go back down. If I move the slider to High they usually work, very quickly, sometimes they just do the same thing. Also once when I moved them slider to off they kept doing their little 1" dance until I shut off the car and then restarted it. Does this seem like a switch issue or a wiper motor issue?
Question 2: The two wipers frequently run into each other on the down stroke in the middle of the windshield. If I get out an move one they will start going again. But frequently run into each other. Is there a way to adjust their timing or should I change out the passenger wiper to be a smaller size to avoid this?
Thread Starter
Advanced
Joined: Apr 2016
Posts: 92
Likes: 5
I'd ask you??? How long have you owned your '75 AND is this a new issue that has started when they worked properly before?.Are the blades the correct ones?..DO attend to the proper adjustment of the wiper mech anism and location of the blades on the posts..Wilcox has that part done right for you if you have basic tool skills and can follow directions..THERE are some obvious grease-lube points on the mechanicals which can be seen simply with hood open..Clean that whole area well while you have the hood up..Jim
Burning Brakes
Joined: Oct 2015
Posts: 781
Likes: 113
I've owned it for 2 months. Never used them before this weekend. Got caught outside in a freak drizzle. Anyways had the problems listed in original post. I will adjust the wipers per the comments above, thank you for that. However I'm not sure that will solve my first question, them not working on the low setting.
I tried several different sets of wiper blades on my '78 and until I finally got the more expensive blades by Bosch..the blades chattered a bit in operation.
IF the posts are rotating-reversing properly at both speeds, lube the mech lightly and then get new blades properly for that car year..
The adjustment stuff is fairly simple once you determine that you have correct blades all is clean-lubed and the switch is doing it's thing..Take a look at the loop wire stop that the blades rest upon when wipers are off also, sometimes theat simple critter gets damaged or not fastened properly..Jim
Burning Brakes
Joined: Oct 2015
Posts: 781
Likes: 113
as a note, Wilcox has the rep wiper switch in stock for about 30.00..
quite possibly any good parts house would have the switch locally also..
i haven't got up behind the dash to replace one but looks fairly simple..Jim
https://willcoxcorvette.com/corvette...r-switch-68-76
quite possibly any good parts house would have the switch locally also..
i haven't got up behind the dash to replace one but looks fairly simple..Jim
https://willcoxcorvette.com/corvette...r-switch-68-76
Le Mans Master
Joined: Aug 2006
Posts: 7,413
Likes: 1,552
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Hi again.
Trico wiper blade #16-2 are low profile and are the correct length and fit the attachment points.
The wiper motor and the wiper switch must be grounded.
The ground for the wiper motor (black wire) joins the heater fan motor and ends at a starter or bell housing bolt.
The switch gets its ground from the bezel unless the bezel is cracked.
Attach a good ground to the switch and see what happens.
The wiper motor and the wiper switch must be grounded.
The ground for the wiper motor (black wire) joins the heater fan motor and ends at a starter or bell housing bolt.
The switch gets its ground from the bezel unless the bezel is cracked.
Attach a good ground to the switch and see what happens.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,108
Likes: 9,236
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Sounds like the switch. Try the willcox bench test to test it in all modes while still installed.
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Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,850
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I've owned it for 2 months. Never used them before this weekend. Got caught outside in a freak drizzle. Anyways had the problems listed in original post. I will adjust the wipers per the comments above, thank you for that. However I'm not sure that will solve my first question, them not working on the low setting.
If the motor works per the bench test the issue is probably the wiper switch.
Willcox
1973-1982 Wiper Motor Testing.
Advanced
Joined: Jul 2014
Posts: 56
Likes: 0
This may seem like a very broad question to ask, but I need some clarity here.
I've removed everything from the inside of my 81, painted what could be salvaged, bought new what needed to be replaced, and what was my biggest concern was replacing the dash wiring harness. I've even purchased all new screws, and even down to acorn nuts on the seat hinges.
Realistically, barring no major issues, what should I be looking at price wise to have the shop who is painting the car, put the interior back in? I'm not putting the A/C back in, because all the parts that should've been in the engine compartment for it had been removed when I bought it. The engine is not original either.
I'm looking at $15K to paint, and $6K to put this back together.
For an 81, I'm way past the point of diminishing returns, and I'll probably never sell this car anyway. It's my last Vette, but I want it to be right.
Any thoughts would be appreciated. This car will be just used to cruise in on the weekends, weather permitting.
I've removed everything from the inside of my 81, painted what could be salvaged, bought new what needed to be replaced, and what was my biggest concern was replacing the dash wiring harness. I've even purchased all new screws, and even down to acorn nuts on the seat hinges.
Realistically, barring no major issues, what should I be looking at price wise to have the shop who is painting the car, put the interior back in? I'm not putting the A/C back in, because all the parts that should've been in the engine compartment for it had been removed when I bought it. The engine is not original either.
I'm looking at $15K to paint, and $6K to put this back together.
For an 81, I'm way past the point of diminishing returns, and I'll probably never sell this car anyway. It's my last Vette, but I want it to be right.
Any thoughts would be appreciated. This car will be just used to cruise in on the weekends, weather permitting.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,850
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I just checked my car and the upper nut goes all the way down to the black, are you sure you don't have a booger'd up thread on one or the other.?