92 FLH Charging system help

Discussion in 'Electrical' started by todsho, Aug 5, 2012.

  1. todsho

    todsho Member

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    Hello all, New to the forum and first post.
    I just picked up a 92 FLH that has been sitting for 3+ years in a garage. The bike runs well and rode it 21/2 hrs home. My problem is, about 20 miles into the trip home. I lost voltage. (guage down to battery voltage) went about 5 miles and started charging again. It did this all the way home. It would charge, then not charge. I made it home fine. The next morning, fired the bike up and charging fine for about 5 or so min then falls off. Let it sit for a while and it charges fine then falls off when bike warms up. I tested the regulator according to "self help" instructions and it seems fine. Can a regulator or stator be intermittent? I thought that they where either "good" or "bad",
    Any ideas on what could cause this? Thanx
     
  2. SledDog

    SledDog Senior Member Staff Member Moderator

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    It possible you could have a component heating up and causing an issue, but have you checked for loose wiring?
     
  3. todsho

    todsho Member

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    I am planning on doing that today. I am also going to check all the grounds for corrosion once I find them all. This is my first "Big Twin" so learning as I go..LOL.
    The ign. module plug was corroded so it would not surprise me to find other corrosion.

    By the way...tha "self help" section is a great sourse if info! thanx
     
  4. Dr. Dolittle

    Dr. Dolittle Experienced Member Staff Member Moderator Contributor

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    All of your analysis seems to be based on readings from your voltage gauge. Is it possible the gauge itself could be faulty and/or intermittent?
     
  5. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    I think SledDog is on track above. I would begin with the easy stuff, and check your grounds as you suggest above. For the main battery leads, I suggest removing, wire brushing and resecuring BOTH ends of both cables.

    This is always a good place to start with intermittent electrical problems.

    TQ
     
  6. todsho

    todsho Member

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    I tested voltage at the battery also and multimeter confirms the voltage loss.
    I just did a stator test and it failed. I have about 2 AC volts max at the stator plug at 3000 rpm so I am goig to say that it is the stator that failed. I started the bike this morning and had no voltage...only showing battery voltage :(
    So..Stator replacement..here I come! They are not that expensive other than the work involved so I am not that upset. I knew going in that the bike may need some work...especially for what I paid for it and having sat for 3+ years.
     
  7. todsho

    todsho Member

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    Another question...does anyone know who sells a replacement ignition switch for the 80s to 92 FLH? I know these are rare and hard to find so any help would be appreciated....even a good used one would do...thanx
     
  8. SledDog

    SledDog Senior Member Staff Member Moderator

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    Ignition switch or the actual on the handlebar push button?
     
  9. todsho

    todsho Member

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    The ignition swtch itself...the button is fine..
     
  10. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

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