Idle stall...?
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Intermediate
Joined: Nov 2013
Posts: 48
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From: GA
Idle stall...?
I have 2013 Forty-Eight with just over 1300 miles on it. I started her up and let her idle a bit to warm up, and after a min or so, she cut out. She sounded fine, was idling like normal, and then just died. I fired her up again and she was fine...? Any ideas? Anything to be concerned about??
This is my first bike and I'm new to the whole scene, so any words is really appreciated Thanks gents!
This is my first bike and I'm new to the whole scene, so any words is really appreciated Thanks gents!
Advanced
Joined: Dec 2013
Posts: 59
Likes: 0
From: Hotter Than Hell, AZ
My 2014 Forty Eight has had a similar issue. I got it brand new with 7 miles and I now have 1900 miles. Since I got it it has had an occational miss around idle to 1800 rpm, not enough to die but enough to audibly hear it skip a beat.
Its all stock except for the short shot slip-ons, never been tuned(yet). BUT this has been happening BEFORE I installed the slip ons. I mentioned it to the dealership when I took it in to deal with an oil leak the first time but they failed to give me an answer or a remedy.
Its all stock except for the short shot slip-ons, never been tuned(yet). BUT this has been happening BEFORE I installed the slip ons. I mentioned it to the dealership when I took it in to deal with an oil leak the first time but they failed to give me an answer or a remedy.
Road Captain
Joined: Jan 2009
Posts: 566
Likes: 7
From: Seattle, WA
The stock fuel map has a lean point when coming off of cold-start enrichment in certain situations. Without modifying the ECU's open-loop fuel maps (with the Screamin' Eagle tuner) or installing a piggyback system like the Power Commander that has its own open-loop maps, there's really nothing you can do about it.
If the issue is happening once you're in closed-loop, something like the XiEDs will help, but if it's an open-loop issue the XiED won't change anything since the XiEDs only enrich the mixture once the ECU has transitioned into closed-loop operation. This is NOT a knock on the XiEDs, they work very well at what they are designed to do (enrich the mixture when in closed-loop mode), it's just to note that they may or may not help depending on when your bike is specifically having the stumble.
My personal solution was to go in and edit both the open- and closed-loop maps on the ECU directly with the Screamin' Eagle Tuner. I like the flexibility the SE Tuner has that most piggyback systems don't. However, there's nothing wrong with a piggyback system and you can save a bunch of money going that route if you're not in need of the ability to tweak every last little thing.
If the issue is happening once you're in closed-loop, something like the XiEDs will help, but if it's an open-loop issue the XiED won't change anything since the XiEDs only enrich the mixture once the ECU has transitioned into closed-loop operation. This is NOT a knock on the XiEDs, they work very well at what they are designed to do (enrich the mixture when in closed-loop mode), it's just to note that they may or may not help depending on when your bike is specifically having the stumble.
My personal solution was to go in and edit both the open- and closed-loop maps on the ECU directly with the Screamin' Eagle Tuner. I like the flexibility the SE Tuner has that most piggyback systems don't. However, there's nothing wrong with a piggyback system and you can save a bunch of money going that route if you're not in need of the ability to tweak every last little thing.
Elite HDF Member
Joined: Aug 2013
Posts: 3,789
Likes: 277
From: Hawkeye state
The stock fuel map has a lean point when coming off of cold-start enrichment in certain situations. Without modifying the ECU's open-loop fuel maps (with the Screamin' Eagle tuner) or installing a piggyback system like the Power Commander that has its own open-loop maps, there's really nothing you can do about it.
If the issue is happening once you're in closed-loop, something like the XiEDs will help, but if it's an open-loop issue the XiED won't change anything since the XiEDs only enrich the mixture once the ECU has transitioned into closed-loop operation. This is NOT a knock on the XiEDs, they work very well at what they are designed to do (enrich the mixture when in closed-loop mode), it's just to note that they may or may not help depending on when your bike is specifically having the stumble.
My personal solution was to go in and edit both the open- and closed-loop maps on the ECU directly with the Screamin' Eagle Tuner. I like the flexibility the SE Tuner has that most piggyback systems don't. However, there's nothing wrong with a piggyback system and you can save a bunch of money going that route if you're not in need of the ability to tweak every last little thing.
If the issue is happening once you're in closed-loop, something like the XiEDs will help, but if it's an open-loop issue the XiED won't change anything since the XiEDs only enrich the mixture once the ECU has transitioned into closed-loop operation. This is NOT a knock on the XiEDs, they work very well at what they are designed to do (enrich the mixture when in closed-loop mode), it's just to note that they may or may not help depending on when your bike is specifically having the stumble.
My personal solution was to go in and edit both the open- and closed-loop maps on the ECU directly with the Screamin' Eagle Tuner. I like the flexibility the SE Tuner has that most piggyback systems don't. However, there's nothing wrong with a piggyback system and you can save a bunch of money going that route if you're not in need of the ability to tweak every last little thing.
Road Captain
Joined: Jan 2009
Posts: 566
Likes: 7
From: Seattle, WA
With my tts it is open loop in idle rpm/map range. I also changed some timing around per suggestion on some good dyno tuners here on the forum. Did you do any timing adjustments as well? Only in the idle range and low map. Also adjusted cold throttle spark in 1k&1.5k up to the next to last temp column. Really help the stumble with a cold take off as well as smoothed it out a lot.
Thread Starter
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Intermediate
Joined: Nov 2013
Posts: 48
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From: GA
As for my stall problem, I didn't change ****...she's bone stock. With that being said, it was ridiculously cold outside, which is why I was letting her idle...then came the stall.
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Road Captain
Joined: Jan 2009
Posts: 566
Likes: 7
From: Seattle, WA
Short of changing the maps or adding a piggyback unit, there's nothing you can do about it.
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HDF Community Team
Joined: Dec 2011
Posts: 8,591
Likes: 4,020
From: San Diego, CA
EFI wussies, try getting a carb bike going in cold weather. My '91 is cantankerous here in San Diego, which is not even that cold.
John
John
Last edited by John Harper; Jan 7, 2014 at 08:07 PM.
Road Captain
Joined: Jan 2009
Posts: 566
Likes: 7
From: Seattle, WA
The old choke-less racing carbs were indeed cold blooded even when adjusted perfectly, but I doubt someone would be running one of those on the street.