Setting engine idle speed - Honda CRF1000L Africa Twin Forum
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post #1 of 11 (permalink) Old 12-11-2016, 04:16 AM Thread Starter
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Setting engine idle speed

My engine is idelling at 1800 RMP. Does anyone know the electronic routine of pushing the buttons to reset the idle speed. Owners manual says the correct idle speed should be 1200 RMP. I do not have shop manual, so I do not know how to reset.
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post #2 of 11 (permalink) Old 12-11-2016, 04:42 AM
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Normally the ECU settings with a Honda in general are resetted by disconnecting the battery for a few minutes, so you can give it a try as a start.
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post #3 of 11 (permalink) Old 12-11-2016, 05:39 AM
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I have heard this mentioned over on the ADV forum. There are several AT threads on there. You might ask the question there also. Here are two of them. The page numbers are irrelevant.



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post #4 of 11 (permalink) Old 12-11-2016, 11:55 AM
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Have you tried to reduce your throttle free-play and possible adjusted it too far? Possible pulled a vacuum hose loose and have an intake leak?
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post #5 of 11 (permalink) Old 12-11-2016, 03:02 PM
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I was off out today on my AT and I gave some thought to OCR's question. When cold the motor does idle at 1800rpm, but eventually when fully heated it settles at about 14/1500 rpm. I am aware that OCR currently cannot ride so perhaps He should let the bike idle for a little longer to see if it settles ? I am also aware that he is suffering from extreme frustration at temporarily not being able to get out on his bike. He has my deepest sympathy........
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post #6 of 11 (permalink) Old 12-13-2016, 01:36 AM Thread Starter
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I know if the Africa Twin DCT ideal is set like some other Honda DCT bikes the adjustment is automatic, and controlled by the ECU. This is set at the factory, and there are steps to follow if the ideal adjustment is not correct. I know the owner's manual states the ideal should be 1200 RPM. After complete warm up my AT ideals at 1800 RPM. IF I owned a shop manual, I am sure the procedure is listed some where in the shop manual. Life was easier when we just had ideal adjustment screws.
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post #7 of 11 (permalink) Old 12-13-2016, 12:17 PM
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Old...I should have a shop manual arriving today. As soon as I get it I will look to see if I can find the idle reset procedure for you. Standby.....
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post #8 of 11 (permalink) Old 12-13-2016, 08:00 PM
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Old....I've got good news and bad news.....
The good news is that my Service Manual arrived as promised
There bad news is that is says there is no way to adjust the idea speed. The attached photo shows the entire section on idle speed. The other two areas mentioned as potential issues (IACV operation or Intake Air leak) are probably outside the bounds of what we can correct via this forum.
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post #9 of 11 (permalink) Old 12-13-2016, 11:53 PM Thread Starter
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Thanks, the bike is under warranty. So, once I can ride again in a few months I will have to take to a dealership.
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post #10 of 11 (permalink) Old 12-14-2016, 08:25 AM
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There is one other possible thing You could try. That is the ECU reset procedure. I think it is a 12 minute running of the bike from cold without touching the throttle or any controls. Perhaps follow up on that though with a search, as some procedures require the time to be set from the first running of the fan, so I am not sure about this.


I note also that the instructions on the manual suggest connecting a tachometer. That suggests to me that the bike's tacho is possibly not considered to be accurate enough. Accordingly does the bike sound like it is actually running as quick as 1800rpm ? As such could the tacho be giving an incorrect reading ?
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