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Intermittent wiper issue

 
  #1  
Old 04-15-2019, 06:38 PM
puppyf250
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Intermittent wiper issue

Intermittent wipers, as well as low and high worked fine. Now, when I use the intermittent wipers, they are always on the low setting. Low and high still work fine. Just on the intermittent do I have an issue. Is this the module for the intermittent pulse?
 
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Old 04-15-2019, 08:39 PM
Hansen13
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I've had the issue, turns out it was the signal switch itself going bad. Replaced and haven't had issues since.
 
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Old 04-15-2019, 08:43 PM
puppyf250
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Hansen13, what do you mean by the signal switch? The turn signal switch, or the wipe switch/****?
 
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Old 04-15-2019, 08:46 PM
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ahhh **** guess should have asked what year your truck was. the 92-97s had the signal switch/wiper on one control and they tend to fail.
 
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Old 04-16-2019, 08:44 AM
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Originally Posted by puppyf250 View Post
Intermittent wipers, as well as low and high worked fine. Now, when I use the intermittent wipers, they are always on the low setting. Low and high still work fine. Just on the intermittent do I have an issue. Is this the module for the intermittent pulse?
I'm a little confused. I understand the difference between the low and high settings on the wipers, but on the intermittent setting in my 1996 the wipers move the same speed as on the low setting.
 
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Old 04-16-2019, 11:13 AM
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What year truck? At least through '91, the wiper module is known to fail. Located under dash, near parking brake, plastic box maybe 2" cube. Apparently, vibration from brake release eventually cracks circuit board. Happened to my '91, and the '86 parts truck had the same module.
 
  #7  
Old 04-16-2019, 06:04 PM
puppyf250
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OOPS, my bad. 1991 F-250. I know they have the module, was wondering if this is an indication it is bad?
 
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Old 04-16-2019, 06:27 PM
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Originally Posted by puppyf250 View Post
1991 F-250
I gracefully retract my statement then! Will stay tuned, I've got an '88 that has outrageously slow wipers as well.
 
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Old 04-16-2019, 07:17 PM
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I have '88 F250. The wiper uses the low speed setting to do the PARK function when you turn them off, because that's where the electrical contacts in the wiper are. The intermittent circuitry uses a timed power surge to start the low speed circuit, which then goes to PARK since the power has shut off. So I don't see how the intermittent could ever do high-speed.
 

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