03-16-2017, 10:56 PM
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#8
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,129
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Re: washer wont stop squirting
Quote:
Originally Posted by B. W.
You probably already know this: washer pump is mechanical, driven off the wiper motor, it is held in the "engaged" position by a relay, when the relay shuts off the washer pump is turned off by a mechanical cam ( been a while since I've been into one, I think that's right) Anyway, what I'm getting at is this: if the pump is not shutting off it could be a mechanical failure inside the wiper motor or (obviously) electrical - power is being supplied continuously. If you have pulled ANY power off the wiper circuit it might feed back & keep the washer pump on. I found on one rig the hot wire for the electric choke was tapped into the wiper circuit, the washers would not shut off.
Side note: whoever designed the system was either a mad genius or high on crack!
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Good stuff
__________________
Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025
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