idle speed question
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Joined: Jun 2011
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From: Maryland
idle speed question
I have a 2012 Limited that is 100% stock regarding any performance upgrades. After warm up, what should the bike's idle be?
I had 2 defective voltage regulators, but no other breakdowns.
I had 2 defective voltage regulators, but no other breakdowns.
Road Master
Joined: Dec 2009
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From: Louisiana
Around 1000 rpm.
Extreme HDF Member
Joined: Sep 2010
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From: Phoenix '53, '88, '09 Big Twins
1000 rpms +/- 50 is the spec.
if yours is idling higher ( like 1300 when warm) reset the throttle position sensor.
bike off, run switch on.
with RIGHT hand turn on igntion- let fuel pump prime and stop, with RIGHT hand turn off igntion.
repeat this cycle 4 times.
this resets the TPS and the reason that it is done with the right hand is so that there is no accidental throttle input from a hand resting on it.
it is better to stop the motor with the right hand on ign. than the kill switch.
If you use the kill switch and the idle is high again, do the reset.
the 1000 rpm idle is good for the motor- oil pressure and volume are high through the bearings and the hottest parts of the motor including being sprayed at the underside of the pistons, carrying away heat.
it keeps the charging system closer to charging than discharging the battery
the higher idle is also better for tailpipe emissions.
mike
if yours is idling higher ( like 1300 when warm) reset the throttle position sensor.
bike off, run switch on.
with RIGHT hand turn on igntion- let fuel pump prime and stop, with RIGHT hand turn off igntion.
repeat this cycle 4 times.
this resets the TPS and the reason that it is done with the right hand is so that there is no accidental throttle input from a hand resting on it.
it is better to stop the motor with the right hand on ign. than the kill switch.
If you use the kill switch and the idle is high again, do the reset.
the 1000 rpm idle is good for the motor- oil pressure and volume are high through the bearings and the hottest parts of the motor including being sprayed at the underside of the pistons, carrying away heat.
it keeps the charging system closer to charging than discharging the battery
the higher idle is also better for tailpipe emissions.
mike
Last edited by mkguitar; Jun 26, 2014 at 07:50 PM.
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Joined: Jun 2011
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From: Maryland
thanks for the info. Mine runs lower than 1000. Thought it might be due to a new air cleaner? Seems like it used to stay above 1000.
Maybe the dealer just reset the bike as you described.
Maybe the dealer just reset the bike as you described.
Outstanding HDF Member
Joined: May 2008
Posts: 2,543
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From: Ashland Ohio
Dealer did nothing like that, it should be idling at 1000 rpms. The factory spec is 1000 rpms. If it is idling at a different rpm, when completely warm? There is an issue. You may have broke something replacing the AC. Have you ever done one before? Did you remove the black plate from the TB? You should have. It is bolted to the top of the throttle body and goes behind the stock breather bolts in the heads if you installed an SE AC. What, exactly did you install, AC wise?
Last edited by wurk_truk; Jun 26, 2014 at 08:48 PM.
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