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F800GS random cut out when pulling clutch in.

Discussion in 'Parallel Universe' started by oldenduronoob, Feb 3, 2015.

  1. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    On the early bikes there was a bug in the firmware that caused bikes to cut out because the ECU "thought" the kick stand was being deployed and thus shut off the engine intentionally.

    I would have thought that maybe the logic would read

    <if bike is not moving> AND <kick stand is deployed> THEN <turn off engine>

    but apparently the ECU did not look to see if the bike was in motion, so perhaps the same thing is somehow happening with the clutch switch ... I don't know as I don't understand the "logic" being used ... but I find it an interesting item...
    #21
  2. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    On the early bikes there was a bug in the firmware that caused bikes to cut out because the ECU "thought" the kick stand was being deployed and thus shut off the engine intentionally.

    I would have thought that maybe the logic would read

    {if bike is not moving} AND {kick stand is deployed} THEN {turn off engine}

    but apparently the ECU did not look to see if the bike was in motion,
    so perhaps the same thing is somehow happening with the clutch switch ...
    I don't know as I don't understand the "logic" being used ... but I find it an interesting item...
    #22
  3. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    Found the picture of what the "business end" of my IAC looked like when I removed it for inspection/cleaning:
    (bike had about 30K miles on it at the time and has had regular doses of techron over it's life)

    It's no freaking wonder that I had idle & stalling issues ...

    Idle_Air_Control_Solinoid.jpg
    #23
  4. SI Eddie

    SI Eddie Adventurer

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    My 09 cut out when pulling the clutch in to downshift, as well as releasing to take off. Many tense moments of dogpaddling out of traffic when bike stalled on take off, especially with one of my kids onboard. I no longer have this bike.
    #24
  5. Dorito

    Dorito Dreamer and Doer

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    Where on the bike is this located? I've got a 2015 F700 with 22K miles on it. I commute on the bike, so it's normally used daily until it had a 3 week siesta. Now it stalls intermittently when I get off the freeway. Techron user too...
    #25
  6. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    Pop off the right front side fairing and you will see it screwed into the side of the air box.....

    It you look at maxbmw fiche ... it's under P/n: 13 71 7 702 755
    Under fuel preparation --> intake sound system ....
    not much work as long as you have 1/4" drive torx bit of the correct size ... T15 if I recall correctly ...................

    I just cleaned mine again at 5oK miles and it was loaded with crap................
    #26
  7. Dorito

    Dorito Dreamer and Doer

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    So, after cleaning the IAC, the throttle body butterflies, techron and BMW fuel cleaner for 600 miles, 24K maintenance....the culprit appears to be the Throttle Position Sensor. It was replaced and well see if that cures my stalling woes.
    #27
  8. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    How did you determine that the TPS was faulty?
    Was it throwing error codes or???
    #28
  9. Dorito

    Dorito Dreamer and Doer

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    The GS911 didn't have any error codes, but I only ran the initial auto-scan. As for the final fix, after all my above toiling, I cashed in on my 3 year/36K mile warranty. It was ready for pickup 3 days later :D
    #29
  10. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    So ... somehow the Dealer mechanic decided that a new TPS would do the trick ... based either on more detailed diagnostics, or intuition eh? :drink
    #30
  11. Canada Mike

    Canada Mike Been here awhile

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    Just wonder if you have this part number for reference? TPS that is.
    #31
  12. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    #32
    suprbst and Canada Mike like this.
  13. Canada Mike

    Canada Mike Been here awhile

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    Langley BC
    #33
  14. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    yeah... I don't know what gives sometimes with the freaking Germans ....

    The valve shims are called "oil sinks" .... :lol2
    #34
  15. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    #35
  16. Reaver

    Reaver How Did I Get Here?

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    #36
  17. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    Trade you a 12-pack of Imperial dark for one when I see ya ;-)
    #37
  18. Reaver

    Reaver How Did I Get Here?

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    When that day comes when you are finally done thinking about it and have left, and you don't get lost or kidnapped on the way, then I'll think about it.
    #38
  19. JRWooden

    JRWooden Homeless motorcycle vagabond ... and ... loving it

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    :drink
    Ever pry one of those babies apart?

    I'm sure I'll get lost ...
    If I get kidnapped I hope THEY have beer ... I can work on my spanish until I convince them that no one stateside gives a rat's ass about me....

    I'm re-reading your expedited thread and taking notes ;-)
    #39
  20. Reaver

    Reaver How Did I Get Here?

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    I'll vouch for your low ROI if needed.

    I've heard stories of these TPS's going bad but I've never seen it myself. I've thrown them at bikes in hopes of a fix while at the Dealer, but it didn't work. So sorry, I got nothing.

    I can read the real time values on my GS911, and I have spares so that's why mine don't fail. I'm prepared.
    #40