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Thread: Buelltooth worth it ?

  1. #21
    Senior Member Cooter's Avatar
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    Quote Originally Posted by trap666 View Post
    I know that the coil is grounded through the wires and ECM ...

    http://buellmods.com/content/downloa...ics_manual.pdf

  2. #22
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    The bike starts but doesn't keep his idle for more than a few secs then stalls. I did the TPS reset procedure a few times but it didn't change anything.
    I will get new plugs and check if I have sparks on both plugs.

  3. #23
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    Hi Guys,

    Finally got my Buelltooth in the mail this week and back working on this bike.

    I did change the plugs, these were completely black. With new plugs in the bike doesn't keep the idle until warm.

    CEL isn't on. The 2 previous codes were just stored in the ECM.

    I did install the Buelltooth and it tells me that the AFV is at 62.8 :-s

    Any idea why ?

  4. #24
    Senior Member 34nineteen's Avatar
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    Quote Originally Posted by trap666 View Post
    Hi Guys,

    Finally got my Buelltooth in the mail this week and back working on this bike.

    I did change the plugs, these were completely black. With new plugs in the bike doesn't keep the idle until warm.

    CEL isn't on. The 2 previous codes were just stored in the ECM.

    I did install the Buelltooth and it tells me that the AFV is at 62.8 :-s

    Any idea why ?

    Do you have the idle speed set too low?

    An AFV that low indicates the ECM is removing (a lot of) fuel because it is sensing an overly rich mixture (and the black plugs called that out too). Have you tried to reset the AFV and watched to see if it returns back to 62?

  5. #25
    Senior Member Cooter's Avatar
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    Jeebus. 62 is the lowest I've ever seen or even heard of. Re-set AFV to 100. Then, under O2 settings, change the AFV limits to 90/110 so it runs long enough for you to diagnose whats wrong or ride it to someone who's a mechanic. Hint! it's not the ECM and no, you don't need a 'new program'



    No. No you don't.

  6. #26
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    Sorry for the delay guys. Cooter and 34nineteen thanks for your help.

    Bike wasn't insured until this week so I couldn't do test rides.

    I did a 60 miles ride yesterday. Bike wasn't keeping idle when cold due to the low AFV but it drove well once warm. No issue to report at all.
    AFV was a 72 when I got back home.

    So I did reset the AFV to 100 today before going for another ride. Idle when cold was great and the bike did run well on this 40 miles ride.

    But AFV was back at 76 when I got home. Before I definitely change the AFV limits to 90/110 any idea what could be the issue ? The bike runs great so I am wondering :-s

  7. #27
    Senior Member Barrett's Avatar
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    Sir: AFV is a program value. It stands for "adaptive fuel value". It is a factor that the ECM develops to use as a benchmark when the system changes from closed loop to open loop. Something in the vicinity of 3-4% of base value 100 is normal and acceptable. Your value is extraordinarily low...indicating that the ECM is cutting the pulse-width of both injectors....normally referred to as "leaning out" or "cutting fuel"....because it is seeing an overly-rich condition. Best I can explain it to you.

    Potential causes:
    One or both injector signal feed wires sporadically grounding to short
    Failing/leaking injectors
    Faulty O2 sensor
    Faulty ECM ground
    Failed fuel pump regulator

  8. #28
    Senior Member Cooter's Avatar
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    Your ECM is seeing a rich condition. Maybe its mechanical (leaky injectors/ clogged air filter), maybe its a sensor malfunction (O2/ temp).

    You can see those values in ECMDroid Live Data to see if they are normal before you throw parts at it. Or just throw parts at it.

    Remember these are old bikes now. Going through the basics before getting muddled up in ECM programming will solve your issues 98% of the time.

  9. #29
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    Thanks guys.

    I think I have the Live Data "by default"

    I did take a screenshot yesterday while doing my test ride.

    IAT Corr at 98%
    WUE at 100.1%
    TPD at 4.2
    AFV at 76
    O2 at 0.72V

    These were with the engine running at idle.

    Which particular values should I be looking for in the ECMdroid live data in my case ?

    Thanks again

  10. #30
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    Quote Originally Posted by trap666 View Post
    Thanks guys.

    I think I have the Live Data "by default"

    I did take a screenshot yesterday while doing my test ride.

    IAT Corr at 98%
    WUE at 100.1%
    TPD at 4.2
    AFV at 76
    O2 at 0.72V

    These were with the engine running at idle.

    Which particular values should I be looking for in the ECMdroid live data in my case ?

    Thanks again
    And thinking about it when I got the bike I did replace the spark plugs because the bike didn't want to start properly and plugs were completely black. So I guess the O2 sensor read properly and the bike is actually running rich. Air filter isn't clogged or dirty. This would point me in the direction of the injectors ? do you agree ?



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