08 High Idle Issue

Many have experienced a higher than normal idle on the 08 bikes with the TBW (throttle by wire) throttles. Some feel it is a problem with the bike but the MOCO is working on a possible fix for this.It is mainly brought about when the idle is elevated just before shut down such as rolling on the throttle when shutting down, sometimes without knowing or realizing it. Using the kill switch to shut down when the idle is not at a normal idle will also promote this condition. The ECM remembers the last known idle speed just prior to shut down.What seems to work for many to eliminate this problem which can also be found in the manual is this procedure below. It is the same procedure for a replacement of the twist grip sensor as it is to eliminate the stored higher throttle value when shutting down and rolling on the throttle which is what is giving some this problem.Whenever a new twist grip sensor (or ECM) is installed, place the engine run/stop switch in the RUN position and turn the ignition/light key switch to IGNITION and then back to OFF four times (without starting engine). Allow at least ten seconds to elapse between ignition cycles. As the ECM uses the first four ignition cycles to establish the optimum idle speed, there may be initial performance problems if the procedure is not performed, such as high idle or hesitation when the throttle is opened.Here's a more detailed view of this. Turn the RUN switch to RUN, do not touch the throttle.Turn on the IGNITION SWITCH, wait for the CEL (Yellow engine light) to turn OFF.Turn off IGN only, wait for 10 seconds and repeat this sequence 3 more times.After this, go to your dealer and get the NEW ECM Flash installed in the bike.What it does is keeps the ECM awake for an additional 10 seconds and gives the TGS (throttle grip sensor) time to settle into a ZERO state, and it is a should be covered under the warranty and a free ECM Flash.If they aren't aware of the fix, refer them to HDNet, there is a document that details the warranty procedure. Tech Tip 380