Wipers run continuously
Thread Starter
Drifting
Joined: Mar 2017
Posts: 1,897
Likes: 165
From: Nashville TN
2017 C4 of Year Finalist
Wipers run continuously
took my door panel apart finally yesterday to fix the door light (had been out since I bought it). When I got in there I realized why my wipers weren’t working-the switch was unplugged! I plugged it in, but then the wiper motor started to run continuously. I swapped with another (known good) switch and it did the same thing. I have a full donor car so I’m not afraid to throw some parts at it-what do I need to do? I’ve read that it could be a dirty slider (less likely because two different switches did it), or a bad wiper control board. How do I clean the slider? Where is the control board?
thank you!
thank you!
Team Owner
Joined: Sep 2003
Posts: 25,419
Likes: 2,746
Since you have a donor I believe it's likely easier to swap the motor so long as the connectors are identical. Many I believe when they go inside the motor to swap park relay etc actually do more damage. Always? No but I believe often enough.
It would also be an excuse to adjust the crank arm and transmissions to correct any parking issues. 30+ year old cars nearly always have parking issues or wiping issues.
It would also be an excuse to adjust the crank arm and transmissions to correct any parking issues. 30+ year old cars nearly always have parking issues or wiping issues.
Team Owner
Joined: Sep 2003
Posts: 25,419
Likes: 2,746
I'd think you shouldn't need to actually install to confirm. If connectors match you hold the motor and test. If it works as expected then you do the swap. It's important regardless of year you confirm connectors. If a service motor was ever put on either car I'm quite sure connectors change.
Instructor
Joined: Jun 2015
Posts: 128
Likes: 13
I had that "wipers won't shut off " problem after a short thunderstorm last summer...pulled off the connectors to the wiper motor and replaced a few times, then all was good again... cleaned off the connectors, ok so far.
But I get the feeling that I'll see this problem again soon...
But I get the feeling that I'll see this problem again soon...
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 278
From: Melbourne, Victoria, Australia
took my door panel apart finally yesterday to fix the door light (had been out since I bought it). When I got in there I realized why my wipers weren’t working-the switch was unplugged! I plugged it in, but then the wiper motor started to run continuously. I swapped with another (known good) switch and it did the same thing. I have a full donor car so I’m not afraid to throw some parts at it-what do I need to do? I’ve read that it could be a dirty slider (less likely because two different switches did it), or a bad wiper control board. How do I clean the slider? Where is the control board?
thank you!
thank you!
Check the wiper motor, the cover has the wiper position arm that is used in the park circuit.
Also check the two connector pins in the right side of wiper motor they connect to the park board cover, i had the bottom one break and the wipers would not stop. Now you cannot buy new ones so i used a spade terminal to fit the plug and connect to the park board cover.
New motors do not come with these you have to reuse your old ones but one of mine broke, keep a look out for these spring terminals.
I also had the intermittant wipers jam when switch was set to delay, not returning to the usual pause position.
Good luck
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Team Owner
Joined: Sep 2003
Posts: 25,419
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Here's the wiper motor internals that have been mentioned.
Last edited by WVZR-1; Jan 22, 2018 at 10:06 AM.
Thread Starter
Drifting
Joined: Mar 2017
Posts: 1,897
Likes: 165
From: Nashville TN
2017 C4 of Year Finalist