C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

85 windshield wipers. Need so help here

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Old Sep 22, 2010 | 01:10 AM
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Default 85 windshield wipers. Need so help here

I have just spent all day trying to figure out why the wipers on my 85 keep cyling in the park postion.
The switch is perfect, tore it down and inspected it, like new. This is the second motor assy on the car and it's doing the same thing.
Any ideas out there? I could sure use some ideas.
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Old Sep 22, 2010 | 02:00 AM
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I'm by no means an expert in wiper motors, but I think the park position is controlled by the circuit board in the wiper cap.
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Old Sep 22, 2010 | 07:40 AM
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:
Originally Posted by C4boy
I'm by no means an expert in wiper motors, but I think the park position is controlled by the circuit board in the wiper cap.
circuit board may need to be replaced...WW

http://www.ecklers.com/corvette-wind...1984-1996.html

Last edited by WW7; Sep 22, 2010 at 07:43 AM.
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Old Sep 22, 2010 | 07:53 AM
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If it like a 91 there is a cam on the cover that has to be in the correct position when you put the cover on. There is a pic in the FSM. Or are saying the wipers will not stop wiping no matter where the switch is set or when you turn them off they park in random places?
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Old Sep 22, 2010 | 08:13 AM
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Originally Posted by ddahlgren
If it like a 91 there is a cam on the cover that has to be in the correct position when you put the cover on. There is a pic in the FSM. Or are saying the wipers will not stop wiping no matter where the switch is set or when you turn them off they park in random places?





If the gear 'pin' jumps out of that little groove in the blue cam or isn't installed right, it will cause your symptoms.

Last edited by Keystring; Sep 22, 2010 at 08:15 AM.
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Old Sep 22, 2010 | 10:55 PM
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thanks for the idea's, Think I'll just change the unit out and see what happens. I have a feeling it may be bad windings in the low speed side of the motor.
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Old Sep 23, 2010 | 12:18 AM
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I think you will not be happy low speed is the switch circuit board and park switch the parking in the the park switch and cam.
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Old Sep 24, 2010 | 08:15 AM
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http://members.shaw.ca/agent86/Windshield%20Wipers.pdf
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Old Sep 25, 2010 | 07:57 PM
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Thanks for the pdf file 86, that is a better one than I had in the manual. Turns out I think I have been chasing my tail on the wipers, looks like it may be a grounding problem. I posted another thread last night "wacky wipers". This thing is really weird. Threre are several problems and they seem to be related.
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Old Oct 17, 2012 | 01:49 AM
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Default Correct location for Cam?

Originally Posted by Keystring





If the gear 'pin' jumps out of that little groove in the blue cam or isn't installed right, it will cause your symptoms.
I have been having problems with the delay and washer operation on my '89. I only have Hi and Lo and Mist. I have a new switch, motor and cover and still no delay or washers. On the blue cam part it has 2 arrows pointing to the cutaway part showing where the pin should be. Is this correct? The groove further into the center doesn't seem to match up right. Would a bad ground somewhere cause this? I don't have a wiring diagram and the replacement cover didn't have instructions. I have the pin on the gear right in the middle of the cutout part of the cam and its still not working. Any help would be greatly appreciated. Thanks!
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Old Oct 17, 2012 | 12:27 PM
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It's been a couple years so I don't remember exactly, but I'm pretty sure the pin on the motor does Not go into the the blue cam. I think it just pushes the edged of the blue cam. I think you also have to have the lever in the correct position when you mount the cover. I broke my cover trying to get the pin inside the cam groove.
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Old Oct 17, 2012 | 01:33 PM
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link not working
My 86 cover is not like that one on the inside...mine has a blue lever arm.
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