GL1800 Fast Idle Issues

2569 Views 4 Replies 3 Participants Last post by DaveO430, Apr 15, 2013

Lil Pete

Discussion Starter · Apr 15, 2013

I may have an issue with my ’08. I haven’t noticed this before today. I have made no recent changes to the bike. The idle seems a bit high 1100rpm in neutral. When in gear with the clutch lever pulled fully 1100rpm. With the clutch lever pulled enough to not turn the tire but not fully pulled, the rpm increases to 1600rpm when in gear. This increase in rpm occurs when the clutch switch is in the out position or no continuity in the switch. The switch itself is working correctly. The throttle cables are not sticking or binding.
I don’t think that the idle should be increasing to 1600rpm when the bike is in gear and rolling. My perceived issue goes away if I cause the switch to have continuity at all times. Is this consistent with what others are experiencing? If not, any ideas what is causing / controlling this issue?

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Lil Pete

Discussion Starter · #2 · Apr 15, 2013

Reset the ECM and the idle has returned to normal...
Which brings me to the next part of the question. Does anybody have any ideas as to what causes this type of issue?

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dadztoy

· #3 · Apr 15, 2013

Lil Pete,
I have had similar issues once or twice on my 2009 1800, but mine a low chunky idle - bike actually killed on me once or twice at a stoplight... I also did a reset of the ECM... BTW, I have heard various ways of doing this - I pull the positive battery lead for a minute or so and reconnect, start bike and let run til cooling fans come on... Is this how you do yours???

I too would like to know what causes this :?

Les

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Lil Pete

Discussion Starter · #4 · Apr 15, 2013

I waited until the engine was cool to the touch. Started the engine and waited for the fans to come on. Shut off engine and restarted. All seems fine now after the reset. Hopefully someone will have an idea that should pan out.

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DaveO430

· #5 · Apr 15, 2013

dadztoy said:
Lil Pete,
I have had similar issues once or twice on my 2009 1800, but mine a low chunky idle - bike actually killed on me once or twice at a stoplight... I also did a reset of the ECM... BTW, I have heard various ways of doing this - I pull the positive battery lead for a minute or so and reconnect, start bike and let run til cooling fans come on... Is this how you do yours???

I too would like to know what causes this :?

Les

First, never disconnect the + without first disconnecting the - .

I believe that needs to be done because it was never done properly when the dealer prepped it.

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