rpm gauge moving below and above 1000.
Thread Starter
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Intermediate
Joined: Jan 2011
Posts: 43
Likes: 0
rpm gauge moving below and above 1000.
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.
What would cause this.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
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.
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.
Road Warrior
Joined: May 2010
Posts: 1,294
Likes: 1
From: South FL
Check both spark plugs for gap clearance, or damages.
Thread Starter
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Intermediate
Joined: Jan 2011
Posts: 43
Likes: 0
I checked the plugs they look fine.
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Outstanding HDF Member
Joined: Aug 2009
Posts: 2,858
Likes: 217
From: Puyallup Wa.
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.
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