Today I noticed my bike sounded odd while stopped at a light. The rpm's were bouncing around 1000. ( 900,1000,1100,900 etc..) I could hear the change in idle from the engine.

What would cause this.

 

look up EITMS

Mike

 

Cut and paste From HD:

http://www.harley-davidson.com/en_US...bmLocale=en_US

....When you are stopped
and at idle, simply push the throttle forward
(closed) to roll off position and hold. After
approximately 3 seconds, the cruise control
indicator will flash either red (disabled) or
green (enabled). Repeat the procedure to
toggle between the two.
During hot idle, or when the motorcycle is
off-throttle and running at hot temperatures,
EITMS shuts off fuel to the engine’s rear
cylinder, leaving it to idle on the front
cylinder only. Without combustion, the
rear cylinder and exhaust header will begin
to cool, bringing relief to the rider (and
passenger) soon after. Once the rear cylinder
cools to a predetermined temperature, or as
soon as the rider accelerates, both cylinders
resume operation. And by maintaining
constant rpm during rear cylinder
“shutdown,” transitions between one and
two cylinder operation are nearly seamless.
EITMS is purely for rider comfort. When it
activates and “shuts off” the rear cylinder, it’s
not because the motor is overheating. It’s
designed to reduce the heat radiating from
the rear cylinder to the rider.
Once an appointment is made, the EITMS
software reflash can be performed for free
by any H-D dealer, usually while you wait.
If, for any reason, the rider does not like the
EITMS, it can be returned to the previous
mapping for free.

 

It's something else, not the EITMS. Even when the EITMS kicks in the idle speed does not change.

 

It doesn't matter if I just started it up or I have been riding for a hour in 35 degree's. It doesn't sound like the rear cylinder is shutting off.

Could the ECM be reprogramming itself?

 

Check both spark plugs for gap clearance, or damages.

 

I checked the plugs they look fine.

 

I have had the same problem intermitant and seem worse when hot. I suspected the wire harness that plugs into the manafold it was rubbing on back of front head wore hole in wire cover. I cleaned up plug connections with contact cleaner and put dielectric grease on connectors and ty wrapped wire harnnes off head. I have since made a cool little bracket to zip tie harness to. My problem went away.