Engine Idle
Tourer
Joined: Jun 2010
Posts: 334
Likes: 3
From: Romeo, MI
Just recently I notice twiced on my last ride across town something that has never happened before. I was in slow traffic going along in 1st gear for awhile (probably a 1/3 of a mile) at about 2600rpms.
As I came to a stop my engine idle stayed higher than the normal lug lug. I rolled my thottle thinking it had stuck but it was at bottom out of rotation. But it kept idling fast. It did this on two different stops and then went away.
Any ideas what would cause this ?
As I came to a stop my engine idle stayed higher than the normal lug lug. I rolled my thottle thinking it had stuck but it was at bottom out of rotation. But it kept idling fast. It did this on two different stops and then went away.
Any ideas what would cause this ?
I'm not certain, but the idle speed seemed to be the same higher than normal idle speed I see while coasting with the clutch in, or between shifts.
Supporter
Joined: Jan 2007
Posts: 15,788
Likes: 5,640
From: along the shore of Mishigami
These will suck in oil vapors from the heads and that could foul the IAC metering valve. When you clean it turn the ignition off and on a few times, this will will move the little needle in there. That was my first thought when you described the problem.
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Road Captain
Joined: Oct 2010
Posts: 683
Likes: 3
From: Florida
Then ever since I've been putting 2 squirts (a low dosage) of fuel stabilizer in each fill up. I think I noticed the idle staying a little high one time since and it did not last long before it dropped back down.
It's something I will be doing on some maintenance checks from now on.
Cruiser
Joined: Sep 2007
Posts: 115
Likes: 2
From:
Hi RWB
I had this problem on my 07 Superglide, along with intermittent stalling for no reason as well.
Did a lot of research and tried everything you did and more, all of which almost fixed the problem, then came across this Tech bulletin on the net.
An ECM upgrade with the latest calibrations and a recallibration of the throttle position sensor voltage as described in the bulletin fixed it completely.
Unfortunately this had to be done by the HD dealer.
Ive attached a text version of the bulletin, hope it fixes your problem completely.
Regards,
Jeff.
I had this problem on my 07 Superglide, along with intermittent stalling for no reason as well.
Did a lot of research and tried everything you did and more, all of which almost fixed the problem, then came across this Tech bulletin on the net.
An ECM upgrade with the latest calibrations and a recallibration of the throttle position sensor voltage as described in the bulletin fixed it completely.
Unfortunately this had to be done by the HD dealer.
Ive attached a text version of the bulletin, hope it fixes your problem completely.
Regards,
Jeff.
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Road Captain
Joined: Oct 2010
Posts: 683
Likes: 3
From: Florida
In any case I am trying to get the money to buy TTS MasterTune which allows the entire ECM remapped. Anyhow thanks for taking the time to give me this. Later.....RWB
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