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Thread: 2010 (DOHC) R1200GS Engine Vibration

  1. #46
    Registered User strmboui05's Avatar
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    Question 2010 DOHC engine vibration

    Quote Originally Posted by roger 04 rt View Post
    In order to test them for accuracy you need a source of specific air/gas type and control O2 sensor temperature.

    Another way is to put them in an exhaust with a second bung added and compare each sensor with an LC-1. If you wanted to send both of them to me, I can do it.

    This is a perfect replacement but you have to cut and splice with posilock connectors. $79 at Beemerboneyard.

    http://www.beemerboneyard.com/11781464492n.html

    I will be surprised if lambda sensors solve your problem.
    The current update:
    Replaced all throttle cables and measured slack on both sides (.5-1.0mm). Also ensured TBs' butterflys hit stops same time using a balance tube with steppers disconnected with Lambda sensors connected. balance of right vrs left, one higher.

    Disconnected the Lambda Sensors and the battery (30 mins+) to delete last mapping from memory. This way mapping returns to default mapping and a richer fuel/air mixture. Connected GS911 and re-sync TBS according to procedure (locking out Steppers) and using a Motion Pro SynchPRO Carb Tuner to balance TBs. Minimal correction on right cable to bring TBs straight across measurement on both sides. Vibration still there but minimized and moved to lower RPM, approx. 33-35K through the rest of the range. Very smooth idle until you throttle up to the 33k range then vibration returns. Shut down the bike using GS 911 procedure (waiting for the Steppers to come back on). Restarted bike (Lambda sensors still disconnected) idles smooth but vibration (diminished) still thereat 33k RPM.

    Shut the bike down and re-connected the Lambda sensors and started bike. Waited for temp to rise and Lambda sensors kicked in and engine vibration introduced immediately at a slightly higher RPM 43-45K RPM and up through the rest of the RPM range.

    My conclusion was the Lambda sensors were introducing something into the mapping and I took the bike to the dealer to have them check on Oscilloscope. Result: all good. I am picking up bike and file of the test/scope today. I will send you the file if you would like to see it?

    Another way to look at this lambda sensor test is that they may be masking another problem because with the default mapping on the vibration is still there.

    Open to suggestions. I have been working on this problem since April 2012.

  2. #47
    Registered User strmboui05's Avatar
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    O2 Sensors for 2010 R1200GS (Camhead)

    Quote Originally Posted by roger 04 rt View Post
    In order to test them for accuracy you need a source of specific air/gas type and control O2 sensor temperature.

    Another way is to put them in an exhaust with a second bung added and compare each sensor with an LC-1. If you wanted to send both of them to me, I can do it.

    This is a perfect replacement but you have to cut and splice with posilock connectors. $79 at Beemerboneyard.

    http://www.beemerboneyard.com/11781464492n.html

    I will be surprised if lambda sensors solve your problem.
    Are you sure that these O2 sensors will work on the 2010 R1200GS (Camhead)? The stock (OEM) ones are made by NTK for BMW. NTK/NGK do not make an aftermarket O2 Sensor for the OEM O2 Sensor. Is the voltage the same?

    Thanks,
    strmboui

  3. #48
    Registered User strmboui05's Avatar
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    Latest Update to Cam head engine vibration problem

    Quote Originally Posted by strmboui05 View Post
    I am writing in regards to a problem I am having with my 2010 BMW R1200GS. Have any of you experienced a high-mid frequency vibration isolated to the engine with a loss of power starting at 3700 up to 8000 RPM?

    The base line is an engine that has the throttle bodies sync, valves adjusted and reprogrammed engine control unit by the dealer. This bike was very smooth through this revolution range up to the 24 K service. Now both hands and feet become numb due to the engine vibration that was not there prior to 24K. This bike did have a recall performed for the camshaft sensor reductor replacement.

    The local dealers are stumped and their only answer is keep riding it and perhaps it will get better. I would appreciate any help/advice to get the bike to run as it use to prior to the 24K service.

    Right now I have two options, ride it like it is or sell it!

    Thanks
    rac
    Just another update in the Cam Head Sage of Engine vibration:

    First I want to say thanks to all of you for your support, ideas and suggestions. Just wanted you all to know I appreciate your time in effort to solve this BMW problem. Thanks! rac

    Pulled the the valve covers and checked all valves. Each valve right in tolerance, couldn't go up or down (.05mm) on any valve to get closer to middle range. Did another re-sync of TBs with GS911 and Motion Pro SynchPRO Carb Tuner and got the vibration to move to start around 43-45K and up through the RPM range. This was at the idle range 0f 1100-1800 rpm range.

    I am completely stumped! Taking the bike to different dealer here in Colorado and see if they can break the code! I will give you a complete report after diagnosis and fix!

    rac

  4. #49
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    When were your plugs chsnged last... I just changed all 4 on my 2012, and it made a big difference in the smoothness of the engine... both at idle and running...

    Sent from my GT-N5110 using Tapatalk

  5. #50
    Registered User strmboui05's Avatar
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    Unhappy Sparkplug change

    Quote Originally Posted by jeffkyle View Post
    When were your plugs chsnged last... I just changed all 4 on my 2012, and it made a big difference in the smoothness of the engine... both at idle and running...

    Sent from my GT-N5110 using Tapatalk
    I changed all when I did the last TB-Sync, no change.

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