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Blower motor fan not running

Discussion in 'The Big Chill' started by leckard, Mar 4, 2019.

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  1. leckard

    leckard Active Member

    Ill try that tomorrow. Thanks for the help.
     
    leckard, Mar 4, 2019
    #21
  2. leckard

    leckard Active Member

    If the blower motor is shot. Can it be replaced from inside the vehicle
     
    leckard, Mar 4, 2019
    #22
  3. leckard

    leckard Active Member

    Also i tried jumping from the single hot wire to the black and orange but no change. I also am sure the ground wire from the housing is connected behind the fender.
     
    leckard, Mar 4, 2019
    #23
  4. BuickV8Mike

    BuickV8Mike SD Buick Fan

    I'm interested.:):):)
     
    BuickV8Mike, Mar 4, 2019
    #24
  5. CJay

    CJay Supercar owner Staff Member

    Its under the fender. The service manual will tell you to remove the hood, bumper and right side fender. Which means you will have to deal with the two bolts and clip nuts on the bottom of the fender that will be most likely frozen solid. You can try sneaking the inner fender out but sometimes that shortcut takes longer than just biting the bullet. You can see where it is in this picture.


    heater core.jpg
     
    CJay, Mar 4, 2019
    #25
  6. leckard

    leckard Active Member

    Had another look and the disconnected plug i referred to earlier is the same wire as the black with orange tracer from the relay. so then i reached around in the hole in the fender and felt a blade connector with nothing attached on the motor. Very hard to reach. Tried to hook it up but couldnt so i decided to hold a jumper wire from the blade to the plug to see if the motor would power on but got nothing. There is 12v from the plug. 1551811184846-961544976.jpg
     
    leckard, Mar 5, 2019
    #26
  7. CJay

    CJay Supercar owner Staff Member

    So I'm a little confused here. Is the black/ orange wire attached to the blower motor? And you telling me you ran 12v right to the blower motor and it didn't work?
     
    CJay, Mar 5, 2019
    #27
  8. leckard

    leckard Active Member

    I cant get the black orange wire to connect to blade on the blower motor so to test if this was worth the effort to keep trying instead i ran a jumper from the orange black wire to the blade on the motor and held it there but still no running motor
     
    leckard, Mar 5, 2019
    #28
  9. leckard

    leckard Active Member

    Had transmission rebuilt recently and some brake hoses replaced recently. So its been to two shops. Dont even know how wire could have been disconnected. Makes no sense
     
    leckard, Mar 5, 2019
    #29
  10. CJay

    CJay Supercar owner Staff Member

    As a last resort, you can try tapping on the motor with a small hammer or the handle of a screwdriver while you giving it 12v. Just to see if the armature is stuck. Sometimes striking an electric motor gets it going again. Sounds like you have a bad blower motor though
     
    CJay, Mar 5, 2019
    #30
  11. leckard

    leckard Active Member

    So after getting the power wire hooked up to the blower motor which was a bear to reach behind the fender I still had no power to the motor. The ground wire ended up being the problem. Even though it was securely attached there was corrosion that kept it from being good.
     
    leckard, Mar 13, 2019
    #31
  12. BuickV8Mike

    BuickV8Mike SD Buick Fan

    What ground wire?
     
    BuickV8Mike, Mar 13, 2019
    #32
  13. leckard

    leckard Active Member

    From the blower to the fender
     
    leckard, Mar 13, 2019
    #33
  14. BuickV8Mike

    BuickV8Mike SD Buick Fan

    I thought it simply grounded with the screws. I guess I should check my manual.
     
    BuickV8Mike, Mar 13, 2019
    #34
  15. BuickV8Mike

    BuickV8Mike SD Buick Fan

    What to most common issue with non AC Blowers when it works with +12 directly? What the best way to clean wiring harness connectors OR should they just be replaced? Cheers, Mike
     
    BuickV8Mike, Mar 14, 2019
    #35
  16. rjm

    rjm Well-Known Member

    To clean the harness connector pins, try Deoxit D5 spray and a acid brush. Trim the bristles on the brush to about 1/2 length, spray the pins, gentle scrub with the brush. Repeat if you have too. That's how we do it on airplanes, works really well and the spray leaves a protective coating on the pins. On the car I always put some dielectric paste on the connector before connecting it.
     
    rjm, Mar 14, 2019
    #36
  17. BuickV8Mike

    BuickV8Mike SD Buick Fan

    Thanks Rick, just ordered a can. :)
     
    BuickV8Mike, Mar 14, 2019
    #37
  18. 12lives

    12lives Control the controllable, let the rest go

    I take a sandwich baggie and fill it ~1/2 with apple vinegar. Put the connector in the baggie and tie it up. Leave it overnight. Next day take it out and rinse with water and blow dry. Comes out looking brand new.
     
    12lives, Mar 15, 2019
    #38
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