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What in the world is going on w/ my ignition system?

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    #1

    What in the world is going on w/ my ignition system?

    Monday morning my bike completely crapped out on me. I lost all power. I pulled over, realized it was electrical, and pulled my side cover. I noticed that 2 fuses had slipped outta their holders, and my main toggle switch (playing the role of ignition) was cooked.

    I jumped the terminals, reinstalled the fuses, and nothing...

    It cranks, but the coils don't fire. No spark on all 4 plugs. I have power coming to the fuses, leaving the fuses and power going to the Dyna III module...

    I'm at a loss. It seems like the fuses popped out and killed my ignition system. Any ideas? I know a blade style fuse box is on the list of crap to do...
    Tags: None
    #2
    What voltage is the battery at when first turned on? Cranking?

    What voltage is at the coils when cranking?
    Cowboy Up or Quit. - Run Free Lou and Rest in Peace

    1981 GS550T - My First
    1981 GS550L - My Eldest Daughter's - Now Sold
    2007 GSF1250SA Bandit - My touring bike

    Sit tall in the saddle Hold your head up high
    Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
    and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

    Comment

      #3
      Originally posted by cowboyup3371 View Post
      What voltage is the battery at when first turned on? Cranking?

      What voltage is at the coils when cranking?
      My DMM battery was dead, so I've been using a test light to check. I'll check voltages and report back tonight.

      Comment

        #4
        Hi,

        Here's some general troubleshooting procedures:

        Testing The Ignition System

        Igniter/Signal Generator/Coil Test

        Igniter Repair/Testing (2MB PDF)

        Keep us informed.


        Thank you for your indulgence,

        BassCliff

        Comment

          #5
          Thanks! I also just found the tech support documents for my Dyna III ignition system, which can be found here for anyone that has the Dyna 3. I'm leaning towards a bad ignition module, since both coils are out.

          404 Not Found | Dynojet
          http://www.powercommander.com/downloads/Support-Released/Dynatek/Manuals/Dyna3TSG.pdf
          Page description


          404 Not Found | Dynojet
          http://www.powercommander.com/downloads/Support-Released/Dynatek/Manuals/D33-1_3-2.pdf
          Page description

          Comment

            #6
            What was the rating on your toggle switch?
            http://www.thegsresources.com/_forum...ine=1440711157'78 GS1000E, Dyna-S ignition, Dyna Green Coils, K&N pods, Delkevic SS 4-1 exhaust, Dynojet Stage 3 jet kit, Russell SS Brake Lines, Progressive suspension, Compu-Fire series Regulator 55402 and Advmonster cree LED headlight conversion.

            Comment

              #7
              Originally posted by cowboyup3371 View Post
              What voltage is the battery at when first turned on? Cranking?

              What voltage is at the coils when cranking?
              I've tried cranking this thing probably a dozen n a half times, so the battery is low... 12.71 when first turned on, drops to 9.7 after about 5 seconds of cranking. That's at the battery. Testing voltage at coils next.

              Originally posted by OldVet66 View Post
              What was the rating on your toggle switch?
              20 amps.

              I just followed the directions from Dynatek to test my ignition module, and got no spark anywhere. So now I'm down to either ignition module or coils. Thanks to BassCliff I've got a general idea on how to test my coils so after this beer, I'll do that.

              Comment

                #8
                As your voltage goes down, the amperage goes up, so maybe you were pulling a lot more than 25 amps across that switch. I know on some bikes if you try to start it with a low battery it welds the solenoid contacts.
                http://www.thegsresources.com/_forum...ine=1440711157'78 GS1000E, Dyna-S ignition, Dyna Green Coils, K&N pods, Delkevic SS 4-1 exhaust, Dynojet Stage 3 jet kit, Russell SS Brake Lines, Progressive suspension, Compu-Fire series Regulator 55402 and Advmonster cree LED headlight conversion.

                Comment

                  #9
                  Ok, final update for tonight. The 1/4 coil showed 3.8Ohms on the primary, 128kOhms on the secondary. The 2/3 showed 3.5 on the primary, nada on the secondary.

                  I'm thinking about spending tomorrow hunting down a new control module and 2 new coils locally so I don't have to sit home all weekend. If not, I'll order them and wait

                  Comment

                    #10
                    Originally posted by OldVet66 View Post
                    As your voltage goes down, the amperage goes up, so maybe you were pulling a lot more than 25 amps across that switch. I know on some bikes if you try to start it with a low battery it welds the solenoid contacts.
                    uh oh. Solenoid as in starter solenoid? My starter still whirs up just fine, but good to know that.

                    Comment

                      #11
                      If the battery is dropping that far down while cranking you aren't having much juice getting out. Go get the battery load tested before going any further.
                      Cowboy Up or Quit. - Run Free Lou and Rest in Peace

                      1981 GS550T - My First
                      1981 GS550L - My Eldest Daughter's - Now Sold
                      2007 GSF1250SA Bandit - My touring bike

                      Sit tall in the saddle Hold your head up high
                      Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
                      and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

                      Comment

                        #12
                        Originally posted by cowboyup3371 View Post
                        If the battery is dropping that far down while cranking you aren't having much juice getting out. Go get the battery load tested before going any further.
                        Did that, and the tester wouldn't even register that the battery was hooked up! Got a new battery, still no spark. Still looks like 1 bad coil and a bad Dyna III module. Still planning on replacing both coils, and the Dyna III.

                        I noticed that both the positive and negative battery terminal hardware, as well as the eyelets on the wires, were black. Looked like soot from fire, but didn't rub off.

                        I'm still leaning towards the idea that when those fuses popped out of their holders, it let the charging system go full-bore and cooked all this electrical stuff. I very well could be wrong, but that seems like a logical explanation to me.

                        Does anyone know if the plate from the Dyna III will work with other Dyna systems, (Dyna S particularly)? I called Dynatek 1st thing Friday morning (literally called at 8:59; they open at 9) and sat on hold for 45 minutes before I finally just gave up. I even left a message with the operators voicemail and got no call back. Typical.

                        Comment

                          #13
                          Another update...

                          I replaced the battery, to no avail. I finally got someone on the phone @ Dynatek and the Dyna S is not compatible w/ the Dyna III so I have to buy a whole new ignition system. Bummer... But the up side is that if I send my old Dyna III back, they'll sell me a brand new Dyna S at a great price.

                          I'm tearing the Dyna III off and sending it out in the AM.

                          Comment

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