Weird Electrical Problems on 2006 F650GS

Discussion in 'Thumpers' started by tomrinbellingham, May 9, 2009.

  1. TheColonel

    TheColonel Adventurer

    Joined:
    Dec 8, 2012
    Oddometer:
    81
    Location:
    Sydney north, Australia.
    I have just had the same problems on my 07 Dakar.
    The ABS light has been coming on intermittently but usually goes off again by itself.(don't know if this is related or not).
    Then this weekend on a rough road with strong washboard bumps at speed the bike misfired very briefly and then tacho read twice the actual rpm.
    I stopped and turned it off and on again and all reset OK.
    Then a little further on it happened again, the tacho reading twice what it should read. So just pulled in the clutch and coasted a little till the RPM's dropped to idle and it seemed to continue as normal after that.
    I have not had a chance to look at the bike since getting home but does any one have any more info on this problem?
    I also have a new battery in it, only 3 months old.

    Cheers

    G.
    #21
  2. greer

    greer Long timer

    Joined:
    Jul 4, 2005
    Oddometer:
    3,884
    Location:
    Glasgow, Kentucky
    First things first: Make sure those battery cables are CLEAN and TIGHT.

    The bible for your bike is www.f650.com. Nice folks there, too. Good luck, let us know how it goes.

    Sarah
    #22
  3. TheColonel

    TheColonel Adventurer

    Joined:
    Dec 8, 2012
    Oddometer:
    81
    Location:
    Sydney north, Australia.
    An update.... all be it a little slow..

    took the advice given and what do you know....

    it worked.

    Loose battery terminal.....glad it was an easy fix.

    Thanks everyone.
    #23
  4. CObot

    CObot a.k.a ColoTron

    Joined:
    Apr 11, 2010
    Oddometer:
    8
    Location:
    Denver, CO
    I experienced the same symptoms described by OP (high RPM readings followed by engine dying). The problem seemed isolated to wet conditions (after a wash or riding on wet roads). As others have mentioned, my root cause ended up being the worn wiring harness behind the suspension adjustment knob. Thanks to all who contributed to this thread, as I know I wouldn't have managed to isolate the problem without google leading me here!

    [​IMG]

    One other note: In my case, the GS-911 tool did not really help in diagnosing this particular problem. Here are the codes I read from the bike right after clearing all codes and then experiencing the failure:

    821: Speed sensor (rpm), signal implausible.
    This fault occured 40 times.
    The fault is not present now.
    304: Oxygen (Lambda) Sensor Circuit Malfunction, No signal or signal
    intermittent
    This fault occured 6 times.
    The fault is not present now.
    1280: Speed signal (vehicle speed), signal implausible.
    This problem occured once.
    The fault is not present now.
    #24