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[NETacoma03Fatboy]

my buddy bought an 09 SERG and we were out riding yesterday.  It cuts to idling on a single cylinder as soon as he stops and idle.  Then has to rev it before he pulls off so it goes back to running on both lungs.  Is that normal?

[sblair]

If you were in stop and go traffic and the engine was hot then yes!  When the engine reaches a specific temp from stopped or slow traffic, the rear cylinder will cut out when you idle.  It just takes throttle movement to fire it back up.  As your friend probably found, it is better to blip the throttle just before you take off.  This is enabled from the factory on all 09's.  Simple procedure to disable it but why?

[GregKhougaz]

I find the bike vibrates slightly rougher when the single cylinder idle engages... anyone else?  Thanks.

Greg

[Gone Fishin']

I find the bike vibrates slightly rougher when the single cylinder idle engages... anyone else?  Thanks.

Greg

Off course it does. It is off balance with a single cylinder firing. The vibration is a cheap price to pay vs. the excessive heat.

Ride safely,
Louis

[bribe36]

I read a post a few weeks ago on how to disable the Engine Idle Temp Management System (EITMS). Not sure if it works on the 09 models but I`ve read about 08 owners who have done. It is done somehow by tuning the throttle to the off position. Just search around I`m sure you`ll find it

[Screamin]

Should be in your bud's manual but turn the ignition on (don't start), roll throttle forward, it will engage or disengage the feature.

[sblair]

Hold the throttle once you roll it forward and watch the cruise control light on your tach.  When it turns red it is de-activated, green is activated.

[bribe36]

Anyone with an 09 SERG actually disengaged the system?

[ice6900]

Off course it does. It is off balance with a single cylinder firing. The vibration is a cheap price to pay vs. the excessive heat.

Ride safely,
Louis

Or an expensive price to pay cus the crank has 2 b replaced, i dont c the single firing giving the crank any favours, What do u think?

[Gone Fishin']

Or an expensive price to pay cus the crank has 2 b replaced, i dont c the single firing giving the crank any favours, What do u think?

I think you need to look at the time spent in the parade mode vs. the time spent in regular mode. My impression would be it is less than 1/1000 of the actual time the engine is running, unless you live in a major city and use the bike to commute or similar. Car manufacturers have been using the same technique for many years, e.g. I believe GM introduced the first engine capable of shutting off cylinders early in the eighties. And most recently they've been showing a 16-cylinder engine capable of running with 16, 12, 8, and 4 cylinders. I am not an engine expert at all, but it still seems to me a useful solution to decrease fuel consumption and/or decrease engine heat, specifically on an air cooled engine like our v2's.

Ride safely,
Louis

[56FLE]

Doesn't the parade mode get engaged if at a stop you roll the throttle back after full off, check your throttle without the bike running, you should find that there is small amount of roll back from its normal off position. I thought this was to engage the parade mode. If you come up to a stop and don't roll the throttle back to this parade mode position I don't think the engine will go into parade mode unless the engine is too hot.

[yellowcvo]

I had my dealer disable the rear cylinder because of stalling and ruff idle issues running much better.The temps have been cooler I will see what happens in the warmer temps but so far running smooth

[grc]

Doesn't the parade mode get engaged if at a stop you roll the throttle back after full off, check your throttle without the bike running, you should find that there is small amount of roll back from its normal off position. I thought this was to engage the parade mode. If you come up to a stop and don't roll the throttle back to this parade mode position I don't think the engine will go into parade mode unless the engine is too hot.

The system has to either be enabled or disabled using the method posted by Screamin and sblair; key on, engine off, roll throttle back, etc.  Once enabled, the system is automatic and doesn't require any input from the rider.  It looks for a cylinder head temp above the threshhold, no throttle, no vehicle speed, clutch disengaged or trans in neutral.  When those conditions are all met, the ECM shuts off the rear cylinder injector.  

From what I've heard, many folks who just try to ride away normally after the system engages suffer from stumbles or even stalls due to the lag before the rear cylinder starts firing again.  Blipping the throttle before releasing the clutch should solve that little quirk by causing the rear cylinder to start firing right away.  

As for damaging the crank or the rest of the engine, I wouldn't worry about that.  If your crank is so poorly put together that idling on one cylinder could cause it to scissor, your engine won't be running long enough to get hot enough to go into parade mode.  

Jerry

[yellowcvo]

 :oops:should proof read in my last post I meant rear cylinder shut down I hate typing  

[SBB]

As for damaging the crank or the rest of the engine, I wouldn't worry about that.  If your crank is so poorly put together that idling on one cylinder could cause it to scissor, your engine won't be running long enough to get hot enough to go into parade mode. 

Jerry

Jerry

That's very interesting.
Good thought!