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Windshield wipers run at random

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Old Jun 17, 2009 | 02:10 PM
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Default Windshield wipers run at random

My '99 FRC took a major soaking from a lawn speinkler head that blew off and dumped a lot of water right on the car. Ever since, the wipers run whenever they feel like it. Initially, the switch had no control at all. Now I can turn them on with the switch to the desired setting, but they still run whenever they feel like it with the switch off. Sometimes they seem to be activated by turning corners. Any suggestions?
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Old Jun 17, 2009 | 03:03 PM
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Roy Dudley here. I'm having the same problem right now on my 98 Coupe. I flooded my windshield and wiper/cowl areas trying to flush where my cat took a pee (long story...) -- Bill Curley (forum member) sorted me out. First, as a matter of course you should clean your drain udders (search on the term and you'll find this right away). Then, you're going to have to replace your Wiper Control Module which is attached below the wiper motor. You can do this yourself if you like, and save a ton of money. There is a thread link that has a step-by-step, illustrated procedure to do this which you can find by searching on the thread. Basically, pull the wiper arms, open the cowl cover, R/R the wiper motor arms assembley and replace the module -- button it up.
I'll try to find the links mentioned in the meantime and post in a later response if you like.

Hope this helps.

Roy Dudley
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Old Jun 17, 2009 | 03:09 PM
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Jim -- Do a search on the thread for "Wiper Motor Removal Procedures" and you'll see the whole thing. It's a post by a member named "Bville-Bud" and it's great. Tells you all about the "udders" too.
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Old Jun 17, 2009 | 03:51 PM
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Same advice I gave roy a couple of days ago.
1. clean out the 3 udders on driver side and 1 on pass side by batt
2. you'll have to replace the wiper motor at this point, as it has already been shorted out by submersion due to the clogged drains. You will no doubt find leaves and other debris clogging the drains when you clean them out.
3. make sure when you replace the motor you allow the connecting plug to dry out as well.

Beeville's post is the one I used and it is very detailed. You'll need a pulley puller and a can of WD40 or Liquidwrench as those pressed on wipers can be a real bear. I do not reccoment using a hammer as one slip may cost you a windshield.
I'll bet they come on every time you make a right turn!! Mine did it too. My GF would crack up laughing at it - I just got mad as hell

This will no doubt banish the wiper gremlin. 3 beer job- start to finish. -97C5
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Old Jun 17, 2009 | 06:17 PM
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Default Windshield wipers run at random

Thanks to everyone for the great responses (as usual...thhis forum is AWESOME!).

One question, if the wipoer motor is shorted out, why does it run and operate the blades?

Also, where can I get the control module? Do I have to go the the dreaded dealer?

Jim Hunt
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Old Jun 19, 2009 | 08:59 AM
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You just need the wiper motor itself (i know it sounds strange). You can get one at Oriellys Autozone Advance or just about any parts store. No need to visit the stealership.
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Old Jun 21, 2009 | 10:44 AM
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Thanks, I am going to tackle this today.
Jim
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Old Jun 21, 2009 | 11:44 AM
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Here is the thread Roy was referring to: http://forums.corvetteforum.com/c5-t...rocedures.html I'll be doing this in a week or so as well.
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Old Jun 22, 2009 | 06:09 AM
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Originally Posted by jims85
My '99 FRC took a major soaking from a lawn speinkler head that blew off and dumped a lot of water right on the car. Ever since, the wipers run whenever they feel like it. Initially, the switch had no control at all. Now I can turn them on with the switch to the desired setting, but they still run whenever they feel like it with the switch off. Sometimes they seem to be activated by turning corners. Any suggestions?
If you follow the previous instructions all is well but I removed the drain uters and cut the bottom so there was a cut front to back and side to side. This allows the debris to release rather than build up.
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