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Thread: intermittant wiper conversion

  1. #1
    4 Star General richingalveston's Avatar
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    Default intermittant wiper conversion

    I am trying to diagnose my wiper problem. I have a new intermittant module (ac delco) and my switch is new (LMC)
    I have plugged in two different motors and both act the same. They appear to work on low only (when the switch is on high) and do not park. Any other switch location does nothing. The spay function works, I have tested that with meter.

    both the motors are old. but since both do the same thing, i am thinking it might be the switch. I have checked the wires to the wiring diagram and they are appear to be wired correctly.

    I have had a ton of brand new bad parts so i don't trust any thing out of the box anymore. Is there a way to test the motors. I can read everything in the diagrams except the switch layout. there is only one power connection to the motor and one to the washer pump (white wire) all other wires appear to be a connection to ground through the switch.

    Any advice is appreciated. I plan to get a new motor and no one has one with the built in pump in stock so it looks like I will have to get a pump and new reservoir since it appears the pump mounts in the reservoir.

    However I am wondering if my new switch or module is a problem also.

    Thanks
    Rich
    Rich
    Galveston, Texas
    85 M1009, 6.5 GEP w/Leroy A-team turbo banks manifold, 4l80e/US shift controller, 205 with ORD Magnum, 4.56 gears, Front - D60 E-locker - 4 inch TC front springs w/zero rate, Rear - 14 bolt D-locker, stock springs ORD shackle flip w/zero rate, 16 inch GM/hutchinson Aluminum double bead locks w 11X39 XZL tires. PSC hydro assist steering.

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    4 Star General Barrman's Avatar
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    I got almost the same thing going on with the Cowdog. I had working intermittent with the intermittent switch installed and the GM module plugged in. Of course, I had to go through I think 4 modules to get one that worked at intermittent. Then all was well for a while. Now, I turn on the wipers and sometimes they work just fine. Sometimes they move a hair and freeze up. Sometimes they freeze somewhere on the glass if I changed from intermittent to low or just turn them off.

    I replaced the motor with one from O'Reilly's and it worked correct once before the same thing happened again. I just haven't driven in the rain until I have time to mess with it.

    Lots of guys on CK5 add ground straps from the motor to the body and claim it cures all your issues. I put a jumper wire on and got no different results.

    Speaking of grounds. The entire wiper motor and washer system work off of a switched ground. The motor and washer pump have 12 volts anytime the key is on. The switch on the column is just turning off and on the ground. Keep that in mind when working on it. You have to think a little backwards, but not all the way backwards.
    "If you didn't build it, you can't call it yours."

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    4 Star General M813rc's Avatar
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    No CUCV I have ever been in (3 of my own, and around 8 belonging to others) would park the wipers, all would stop wherever they were when you turned off the switch.

    Cheers
    Rory

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    i am going to buy a new motor and with a test light start testing the module. from what i can see you just need to connect a ground to each of the input wires on the module and see what you get. each connection is a different setting. you can also test the switch to see which switch settings work by using a meter and seeing if each setting on the switch connects to ground.

    it is strange that the module can work without any power to it. how it can pulse the ground on and off when no power is on the module.

    If ground controls the on off of the motor then I can see why the motor is mounted on rubber washers. I would think a ground strap would cause it not to work right instead of fixing the problem.

    Thanks for the reply's I will post my test results.
    Rich
    Rich
    Galveston, Texas
    85 M1009, 6.5 GEP w/Leroy A-team turbo banks manifold, 4l80e/US shift controller, 205 with ORD Magnum, 4.56 gears, Front - D60 E-locker - 4 inch TC front springs w/zero rate, Rear - 14 bolt D-locker, stock springs ORD shackle flip w/zero rate, 16 inch GM/hutchinson Aluminum double bead locks w 11X39 XZL tires. PSC hydro assist steering.

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    2 Star General 319cssb's Avatar
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    y
    Quote Originally Posted by M813rc View Post
    No CUCV I have ever been in (3 of my own, and around 8 belonging to others) would park the wipers, all would stop wherever they were when you turned off the switch.

    Cheers
    all of my cucv had it park (6) only the m1028 I currently have doesnt. And it's irritating AF
    I will either find a way, or make one!
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    4 Star General cucvrus's Avatar
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    99% of the time it is the motor. Get a rebuilt one and call it fixed. But I never had a CUCV with intermittent wipers.
    To argue with a person who has renounced the use of reason is like administering medicine to the dead. Thomas Paine: Founding Father Quote.

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  11. #7
    4 Star General richingalveston's Avatar
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    I ordered a motor today. At this time no one (local parts store or rock auto) has the motor with the washer pump so I will have to get a separate pump. They had to get it from another store so I pick it up tomorrow.
    wont be able to work on it again until Sunday night
    Rich
    Galveston, Texas
    85 M1009, 6.5 GEP w/Leroy A-team turbo banks manifold, 4l80e/US shift controller, 205 with ORD Magnum, 4.56 gears, Front - D60 E-locker - 4 inch TC front springs w/zero rate, Rear - 14 bolt D-locker, stock springs ORD shackle flip w/zero rate, 16 inch GM/hutchinson Aluminum double bead locks w 11X39 XZL tires. PSC hydro assist steering.

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    4 Star General Barrman's Avatar
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    I used a washer tank from a 1988 GMT 400 truck. Bolted up on the inner fender drivers side. It has the pump in the bottom. Just short jumper wires needed to connect the stock plug to the motor.
    "If you didn't build it, you can't call it yours."

    1952 M35 W/W Gasser
    1953 M35 W/W Gasser
    1967 M715 6.2/NV4500
    1967 M416
    1971 M35A2 Whistler W/W
    1985 M1009
    1985 M1009
    1985 M1009
    1985 M1009
    1985 M1009
    1986 M105A3
    1987 M1007 Suburban (Cowdog)
    1988 M105A3
    1990 M101A2
    1991 M101A2

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    Sergeant Major Timber's Avatar
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    I bought the parts to do this upgrade about a year ago but had to stop messing with the truck for a while. When you say you got the switch from LMC, was it this: https://www.summitracing.com/parts/ADO-D6283D ?

  14. #10
    4 Star General richingalveston's Avatar
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    mine had the arm with it, but yes that looks like the correct switch
    Rich
    Galveston, Texas
    85 M1009, 6.5 GEP w/Leroy A-team turbo banks manifold, 4l80e/US shift controller, 205 with ORD Magnum, 4.56 gears, Front - D60 E-locker - 4 inch TC front springs w/zero rate, Rear - 14 bolt D-locker, stock springs ORD shackle flip w/zero rate, 16 inch GM/hutchinson Aluminum double bead locks w 11X39 XZL tires. PSC hydro assist steering.

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