need help....outa my element...

Electrical & Ignition

  1. CanCritter

    CanCritter Senior Member

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    trying to sort out electrical issue.....going through motions to see whats working...whats not ect in dash,,,had fan going all be it weak...may have been ground issue...anyway it stopped..possible fuse.....anyway was feeling my way through wireing and found a hot spot on the a/c wireing…..
    untitled_LI.jpg
    B terminal was warm/hot...….disconnected B terminal and it still was getting hot (short?)

    far as l can tell have it connected right ...dam it cant load a pic...will have to do it of my phone
     
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  2. CanCritter

    CanCritter Senior Member

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    20200109_215232.jpg
     
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  3. CanCritter

    CanCritter Senior Member

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    know C and D are on right connectors.....wondering If A and C are backwards...
    IMG_0484_LI.jpg
     
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  4. commando1

    commando1 Mr. Natural FCBO Gold Member

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    Then switch them and see.
     
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  5. Fury440

    Fury440 At my age everything's a good idea FCBO Gold Member

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    Is the "heat" coming from the wire wound resistors? They will produce heat depending on which fan speed is selected.

    I would remove the little panel and see how the resistors are connected at the back. That should make it easier to figure what wire to each connector.
     
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  6. cbarge

    cbarge World Famous Barge in a Budget FCBO Gold Member

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    A is low blower speed--brown
    B is med blower speed Light green
    C is High speed dark green
    D goes to blower motor
    Blower motor is grounded through the body.

    Hope this helps
     
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  7. CanCritter

    CanCritter Senior Member

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    thanx kindly....helps big time...least l know starting positions are right to trace wireing from if need be...thanX Cbarge :thumbsup:
     
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  8. cbarge

    cbarge World Famous Barge in a Budget FCBO Gold Member

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    Yer welcome.
    Strongly suggest testing continuity on both the blower switch and blower resistor.
    Both parts are known to be weak links in the system
    Poor connections within the switch can cause resistance & warm wires.
    If the blower resistor has an open circuit between D and the rest it simply wont work on low or medium but will work on high or when MAx Heat or MAx A/C is selected on the HVAC controls (it overides the resistor giving the blower motor full power)
    Hope this helps
     
  9. CanCritter

    CanCritter Senior Member

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    more stuff to learn lol but great info to diagnose....looks like lm finally gona have to learn to use my multimeter today....thatll get the grey matter boiling …:wideyed:
     
  10. CanCritter

    CanCritter Senior Member

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    schools in....
    Dictionary



    con·ti·nu·i·ty
    /ˌkäntəˈn(y)o͞oədē/
    noun
    noun: continuity
    1. 1.
      the unbroken and consistent existence or operation of something over a period of time.
      "pension rights accruing through continuity of employment"
      h
      Similar:
      continuousness

      uninterruptedness

      flow


      progression


      h
      Opposite:
      discontinuity

      • a state of stability and the absence of disruption.
        "they have provided the country with a measure of continuity"
      • a connection or line of development with no sharp breaks.
        plural noun: continuities
        "they used the same style of masonry to provide continuity between new and old"
        h
        Similar:
        interrelationship
        interrelationship between the comprehension and production of early vocabulary" data-hw="interrelationship" data-lb="" data-tae="false" data-te="false" data-tl="en-US" data-tldf="">

        interrelatedness


        intertextuality


        interconnectedness


        connection
        connections between social attitudes and productivity" data-hw="connection" data-lb="" data-tae="false" data-te="false" data-tl="en-US" data-tldf="">

        linkage


        cohesion


        coherence


        unity


        whole


        wholeness

    2. 2.
      the maintenance of continuous action and self-consistent detail in the various scenes of a movie or broadcast.
      "a continuity error"
      • the linking of broadcast items by a spoken commentary.
    Origin

    gona be a rough day lol...…..
     
  11. live4theking

    live4theking Old Man with a Hat

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    Critter,
    When you're checking the continuity of wires and switches you want the reading to be as close to zero as possible. The resistors that power goes through to control your fan speeds are going to be greater than zero. Unfortunately I don't have anything at my disposal to tell you what those values greater than zero should be.
     
  12. cbarge

    cbarge World Famous Barge in a Budget FCBO Gold Member

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    :rofl:
    I am here all day so PM me any questions.
     
  13. cbarge

    cbarge World Famous Barge in a Budget FCBO Gold Member

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    Most Multi-meters have a setting where it beeps when the wire or contact is good.
    Or reads zero resistance when good (no broken wires,etc)
    Basically just checking for no open circuits.
    Using your wiring diagrams,use the + probe on the power feed of the switch and at each setting test the tab with the - probe.
    If the resistance is high or wonky replace the switch.
    On the resistor the + is on the tab going to the blower motor,and the - probe check the three speeds at the resistor.

    Hope this helps