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Old 03-14-2015, 01:39 PM   #1
z00l OP
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Strange behaviour...

Does anyone have idea what might be the problem.

Motorcycle is R1200gs Adv 2013 with 21000km.

In case embeded video doesn't work here is link
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Old 03-14-2015, 02:13 PM   #2
JimVonBaden
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A little background would be helpful, but if you have recently worked on it I would think dislodged throttle cable(s):




Or, could be a bad throttle position sensor or cam sensor.
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Old 03-14-2015, 02:30 PM   #3
z00l OP
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@Jim, Tnx for replay
Bike was serviced 2000km ago at local BMW service. Prior to service bike worked normally. Problem is not present all the time.It usually happens in town and it lasts about minute or two. Bike owner is my friend and he told me that bike can run ten days without any problems and suddenly it starts behave like in video.
Here is complete clip he filmed.

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Old 03-14-2015, 07:19 PM   #4
JimVonBaden
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In that case it is certainly electrical. Not as likely a sensor, but more likely a wire to a sensor. Cam position sensor, or similar. Hard to say without running a diagnostic.
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Old 03-15-2015, 07:58 AM   #5
michdave
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Don't quote me to this, because I'm new to the BMW world, but it almost sounds like an air leak on the intake side; perhaps a loose throttle body boot? Or a missing/loose evap hose (or that little rubber cap on the throttle body)?

I'm not sure the boxer would react that way to it, but I've had (one-lungers) dirtbikes have erratic idles because of it. I would use small sprays of carb cleaner around the area to pinpoint the leak. If there was a leak, it would raise the idle of the bike when the carb cleaner was "sucked in" through the leak.

But from what I've read around these parts, JVB is the "go to guy" for BMW....so he advice probably carries more weight. Haha

JVB, hellos from a fellow "DMV'r"


Good luck on solving it!
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Old 03-27-2015, 11:25 PM   #6
z00l OP
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Problem was faulty TPS sensor. Thanks again Jim
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Old 03-28-2015, 03:42 PM   #7
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There are some Harley guys I know who would pay big bucks for that sensor mod.
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