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  1. #1
    Member C598LS1's Avatar
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    Default Windshield Wipers - Strange Problem

    I just replaced my 98 C5's battery today with an Optima Yellow Top....all was well after that, except my windshield wipers raised a bit off where they are supposed to sit. As i was driving, the wipers then started to move on their own, at their own will, and stop randomly then start back up again; no matter where I had the stick positioned on the column. Pretty embarassing, needless to say. Can anyone tell me what is wrong or what i can do to solve this issue?
    CORVETTE:

    1998 C5 Silver/Gray 6-Speed Coupe
    12/14 Options
    Borla Stinger Quad-Tipped Round Exhaust
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    Best 1/4th: 13.5 @ 104MPH(Stock)

  2. #2
    Member C598LS1's Avatar
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    CORVETTE:

    1998 C5 Silver/Gray 6-Speed Coupe
    12/14 Options
    Borla Stinger Quad-Tipped Round Exhaust
    Borla X-Pipe
    Best 1/4th: 13.5 @ 104MPH(Stock)

  3. #3
    LittleRedFlatBack's Avatar
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    Sounds possessed! Hopefully someone with knowledge on this issue will answer soon. Good luck.

    Dennis

  4. #4
    Member C598LS1's Avatar
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    Quote Originally Posted by LittleRedFlatBack View Post
    Sounds possessed! Hopefully someone with knowledge on this issue will answer soon. Good luck.

    Dennis


    Thanks! I hope so too.....

  5. #5
    LittleRedFlatBack's Avatar
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    Quote Originally Posted by C598LS1 View Post
    Thanks! I hope so too.....
    I'm going to take a stab at this one. Since you just replaced the battery, perhaps you should be looking in that area for wire connections that are loose or corroded. It kind of sounds like a grounding problem. Good luck.

  6. #6
    Member C598LS1's Avatar
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    Quote Originally Posted by LittleRedFlatBack View Post
    I'm going to take a stab at this one. Since you just replaced the battery, perhaps you should be looking in that area for wire connections that are loose or corroded. It kind of sounds like a grounding problem. Good luck.

    I checked all the wires in that area, and everything looks clean and not corroded at all.....the ONLY thing i have control over with the stem on the column is the speed at which it wipes....unless it stops, which is completely on its own, and in no particular place on the windshield...

  7. #7
    Member zagger's Avatar
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    Did you washed your car since replacing the battery?

  8. #8
    killain's Avatar
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    Quote Originally Posted by LittleRedFlatBack View Post
    I'm going to take a stab at this one. Since you just replaced the battery, perhaps you should be looking in that area for wire connections that are loose or corroded. It kind of sounds like a grounding problem. Good luck.
    Is it posible you disconnected anything else? Sounds like you have a loose or bad connection OR a bad switch. Like the wiper system final seat position switch. In the wiper system is a tiny switch that indicates that the wipers are seated in the downmost position and suts off the system. I believe it's in the wiper module. I would cycle the wipers again and provided they back to rest in the downmost position and is off, disconnect the battey, wait a minute or so, check the connections and reconnect making sure you connect the positive first the ground last. and see if this doesn't fix it. just my 0.02

  9. #9
    Member C598LS1's Avatar
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    Quote Originally Posted by zagger View Post
    Did you washed your car since replacing the battery?
    I washed it, but AFTER it started doing this. Meaning, i changed the battery out, then the wipers started behaving this way, when i took it for a ride, but i still washed it after.

    Quote Originally Posted by killain View Post
    Is it posible you disconnected anything else? Sounds like you have a loose or bad connection OR a bad switch. Like the wiper system final seat position switch. In the wiper system is a tiny switch that indicates that the wipers are seated in the downmost position and suts off the system. I believe it's in the wiper module. I wold cycle the wipers again and provided they back to rest in the downmost position and is off, disconnect the battey, wait a minute or so, check the connections and reconnect making sure you connect the positive first the ground last. and see if this doesn't fix it. just my 0.02

    I'll double check, but I didnt see anything loose or disconnected when i replaced the battery. It was a direct, simple swap. What do you mean by cycling the wipers? They are now completely working independently of any control from the cockpit. The ONLY thing i can do with the wipers is increase or decrease their speed, but i cannot make them stop, and even when i increase or decrease the speed, they will stop on their own when they feel like it. I'll try the disconnect/reconnect battery proceedure though...

  10. #10
    killain's Avatar
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    Quote Originally Posted by C598LS1 View Post
    I washed it, but AFTER it started doing this. Meaning, i changed the battery out, then the wipers started behaving this way, when i took it for a ride, but i still washed it after.




    I'll double check, but I didnt see anything loose or disconnected when i replaced the battery. It was a direct, simple swap. What do you mean by cycling the wipers? They are now completely working independently of any control from the cockpit. The ONLY thing i can do with the wipers is increase or decrease their speed, but i cannot make them stop, and even when i increase or decrease the speed, they will stop on their own when they feel like it. I'll try the disconnect/reconnect battery proceedure though...
    I've seen this problem on other chevy's and corvettes. What i mean by cycle is turn on the wipers like with the washer control, let the wiper/washers spray and the wipers go through the process of wiping and then return to the seated position off and still. then disconnect the battery and let it sit for a few minutes, reconnect with the positive first and the negitive last and then see if they continue to operate on their own. At that point you have a problem in the wiper mechanism. It's a problem with the wiper unit itself.

  11. #11
    Member zagger's Avatar
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    The reason I asked if you washed the car is because you described symptoms of a somewhat common problem of water getting inside motor module. It is usually due to plugged up drain system. Sounds like that is not the cause, but I would still suspect it's the module under the wiper motor.

  12. #12
    Member C598LS1's Avatar
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    Quote Originally Posted by killain View Post
    I've seen this problem on other chevy's and corvettes. What i mean by cycle is turn on the wipers like with the washer control, let the wiper/washers spray and the wipers go through the process of wiping and then return to the seated position off and still. then disconnect the battery and let it sit for a few minutes, reconnect with the positive first and the negitive last and then see if their continue to operate on their own. At that point you have a problem in the wiper mechanism. It's a problem with the wiper unit itself.
    While driving it yesterday, i sprayed the washer fluid once but the wipers didnt move...only the washer fluid stayed on the windshield and the wipers didnt move at all....until they decided to move on their own later...

    Quote Originally Posted by zagger View Post
    The reason I asked if you washed the car is because you described symptoms of a somewhat common problem of water getting inside motor module. It is usually due to plugged up drain system. Sounds like that is not the cause, but I would still suspect it's the module under the wiper motor.
    Dumb question, but whereabouts is the wiper motor....maybe i can look at it at some point today..

  13. #13
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    I suspect the rubber drain udders under the cowl are clogged and backed-up with water (probably when you washed the car).

    If the cowl does not drain quickly, it can damage an electronic control module attached to the C5 wiper motor.

    Are you aware of how to clear / clean the rubber udders?

  14. #14
    Member zagger's Avatar
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    The motor and module are on the driver side under the fascia. The udders are under that and can be seen or felt (sorry could not resist) right next to the brake booster in front of the firewall. There are two of them on the driver side and a single one on the passenger side. If you search CAC forums you will find pictures. I'll try to do that for you later when I'll have the time. If it's moisture in the module sometimes it will dry out over several days and the problem will go away. Anyway that is the best scenario, alternative is to replace the module.

  15. #15
    Member C598LS1's Avatar
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    Quote Originally Posted by 99WhiteC5Coupe View Post
    I suspect the rubber drain udders under the cowl are clogged and backed-up with water (probably when you washed the car).

    If the cowl does not drain quickly, it can damage an electronic control module attached to the C5 wiper motor.

    Are you aware of how to clear / clean the rubber udders?
    Hmmm....will have to check these.....no, i am not aware but the below might just help me...


    Quote Originally Posted by zagger View Post
    The motor and module are on the driver side under the fascia. The udders are under that and can be seen or felt (sorry could not resist) right next to the brake booster in front of the firewall. There are two of them on the driver side and a single one on the passenger side. If you search CAC forums you will find pictures. I'll try to do that for you later when I'll have the time. If it's moisture in the module sometimes it will dry out over several days and the problem will go away. Anyway that is the best scenario, alternative is to replace the module.

    LOL!!! If i try that and the car goes "MOO!", it'll be in the classifieds within the hour-especially if it starts squirting milk. Thanks Zagger Pics would help...probably wont be able to get to it till Tuesday though, since today was a family day and i'm exhausted.

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