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RPM jumps up while upshifting

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Old May 25, 2012 | 08:15 AM
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3/4 life crisis's Avatar
3/4 life crisis
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From: Indiana
Default RPM jumps up while upshifting
This just happens several days ago, when I upshift, the rpm jumps up ~200 right before the next gear. I thought is my right hand holding the throttle open as I engage the clutch. But I totally let go of the throttle before I squeeze in the clutch, same thing. Throttle doesn't seem to be sticking.

Any idea? TIA.
 
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Old May 25, 2012 | 08:18 AM
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shooter5074
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Cruise control engaged?
 
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Old May 25, 2012 | 08:27 AM
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3/4 life crisis
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Originally Posted by shooter5074
Cruise control engaged?
No. The cruise switch wasn't even on.
 
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Old May 25, 2012 | 08:37 AM
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z71_fourwheelin
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It happens when you go from loaded engine to an unloaded engine. The more the eninge is worn in the more noticeable it is.
 
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Old May 25, 2012 | 09:30 AM
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MAP sensor works with engine vacumm which changes with load, I would check that out.



cheers
 
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Old May 25, 2012 | 09:40 AM
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Ive noticed it, its like the TBW doesnt spring back to idle still giving the same throttle before you let go of it. Had to twist it back more than once..its not that big a deal for me for now.
 
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Old May 25, 2012 | 02:09 PM
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Originally Posted by z71_fourwheelin
It happens when you go from loaded engine to an unloaded engine. The more the eninge is worn in the more noticeable it is.
My bike got 42k miles on it. Serviced by indy every 5000 miles with Lucas synthetic oils in all holes. I'll keep an eye on it.
 
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