2003 possible possessed throttle?

Discussion in 'Mechanics Garage' started by Steelblitzkrieg, Apr 13, 2018.

  1. Steelblitzkrieg

    Steelblitzkrieg New Member

    Country:
    United States
    Joined:
    Apr 13, 2018
    Messages:
    32
    Likes Received:
    8
    Trophy Points:
    8
    Location:
    Antioch, CA
    Map
    Coming from a 2014 500R (commuter bike), I just picked up my first VFR with 8000 miles on the clock 04/10/18, I noticed something odd regarding the throttle.

    Cold start idle for a minute or less in neutral.

    If I bring the RPM's up to say 2000-2500 and hold the throttle, it will suddenly jump to 4000-5000 without any movement of throttle position, it doesn't run away, it'll hold at the 4000+. I let go, it drops back to idle immediately. It's a delayed response it'll stay at 2500 for a second or two then suddenly surge to 4000+. She doesn't show these symptoms while under load, just your normal herky-jerky if you don't slip the clutch while below 10-15mph.

    I have not tried it after warm-up.

    Anybody experience this?

    Thanks in advance.
     
  2. CaptGarvin

    CaptGarvin New Member

    Country:
    United States
    Joined:
    Jan 4, 2006
    Messages:
    26
    Likes Received:
    1
    Trophy Points:
    1
    Location:
    East Pole
    Map
    Does it do this after it warms up, after a hot start. Cold start will advance the rpms on mine until some setpoint I guess, does yours do this if throttle is not touched? Hopefully more experience with the bike will help with the jerkyness at slow speed. Had same issue going from a cable clutch bike to the vfr hydraulic clutch seemed not as smooth, but learned just to be smoother on the lever.
     
  3. 34468 Randy

    34468 Randy Secret Insider

    Country:
    Canada
    Joined:
    Dec 18, 2007
    Messages:
    13,741
    Likes Received:
    1,557
    Trophy Points:
    158
    Location:
    Chilliwack, BC Canada
    Map
  4. Steelblitzkrieg

    Steelblitzkrieg New Member

    Country:
    United States
    Joined:
    Apr 13, 2018
    Messages:
    32
    Likes Received:
    8
    Trophy Points:
    8
    Location:
    Antioch, CA
    Map
    Sorry about the delay, forgot my password and got sidetracked with work.

    I seemed to have solved it by either the Pair Valve mod or Flapper mod, most likely it was Pair mod IMO. It only occurred while cold like before it registers a temp on the display cold.
     

Share This Page