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Intermittent problem with 2012 FLSTN Deluxe

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  #31  
Old 12-21-2021, 11:56 AM
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Update time. Took the bike out for a 30 minute ride after replacing stator and voltage regulator. Ran like a champ. No problems. Took it out for a longer ride. About 45 minutes into the ride, it started doing that high revs at idle thing again. And sputtering on take off as well as minor smoking and popping. WTF!!! Reached our destination and let the bike sit for awhile. Rode it back home mostly on freeways and no problem at all. DOUBLE WTF!!!

Jim tested the voltage regulator and stator and everything is fine. Also the bike isn't throwing any codes. TRIPLE WTF!!!

Don't know where to go from here.

 
  #32  
Old 12-21-2021, 12:16 PM
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Originally Posted by JAMDeluxe
Update time. Took the bike out for a 30 minute ride after replacing stator and voltage regulator. Ran like a champ. No problems. Took it out for a longer ride. About 45 minutes into the ride, it started doing that high revs at idle thing again. And sputtering on take off as well as minor smoking and popping. WTF!!! Reached our destination and let the bike sit for awhile. Rode it back home mostly on freeways and no problem at all. DOUBLE WTF!!!

Jim tested the voltage regulator and stator and everything is fine. Also the bike isn't throwing any codes. TRIPLE WTF!!!

Don't know where to go from here.
My 2013 has the same problem, unfortunately I haven't been able to work on it due to my health, when I get better (spring?) I plan on tackling it. If I find anything out I'll post it here.
 
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  #33  
Old 12-21-2021, 02:36 PM
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if all that's left is idle speed going up, it may be just the EITMS kicking in - you mentioned you have 'a tuner' in this bike, the right ones allow you to disable that 'feature'.
 
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  #34  
Old 12-21-2021, 03:19 PM
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Good to know. Along with the high idle speed is the sputtering and wanting to die on takeoff. Also blows a bit of black smoke.
 
  #35  
Old 12-21-2021, 03:32 PM
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Originally Posted by JAMDeluxe
Good to know. Along with the high idle speed is the sputtering and wanting to die on takeoff. Also blows a bit of black smoke.
Those cam be symptoms of a bad head temp sensor and or intake leak.
 
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  #36  
Old 12-22-2021, 06:19 AM
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Originally Posted by JAMDeluxe
Good to know. Along with the high idle speed is the sputtering and wanting to die on takeoff. Also blows a bit of black smoke.
Originally Posted by Max Headflow
Those cam be symptoms of a bad head temp sensor and or intake leak.
Same symptoms on mine except for the black (not verified) smoke. The data shows good temperature readings and I had replaced the intake gaskets last spring. One thing I did notice was that both O2 sensors went to 0 volts when the event occurred. I have a steep drive way so I'm able to duplicate the symptoms real easy.

Maybe I'll up load the data log.
 
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  #37  
Old 12-22-2021, 06:56 AM
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Agree with the above , could be an intake leak , you can check using carb clean ( correct me if I'm wrong ) at idle , if it changes , you found it . Check both intake seals and injector seals . I've also used a propane torch , pointing the tip at each seal and giving it a short blast , seemed to work just as well .

What tuner are you using ?

I feel for you , if I had one Christmas wish , it would be for you to find this issue ...
 

Last edited by MyFavRk; 12-22-2021 at 07:07 AM.
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  #38  
Old 12-22-2021, 09:52 AM
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Merry Christmas to all!

We have decided to return to the bike to the friend who sold it to me. We are all in agreement this bike has some gremlins that we don't have the monetary funds to continue to deal with. After doing repeated reviews of the receipts for all the work she had done, it keeps pointing to the distinct probability this bike is just one of those rare lemons and it will continue to have gremlins no matter what we do to it.

Appreciate all of your efforts to help us resolve all the problems we've had with it.
 
  #39  
Old 12-22-2021, 12:03 PM
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After all this diagnostic guessing I’m suspect it’s a wiring, specifically a connector, issue. All the connectors on te bike, from front to rear, need to be inspected, pulled apart looking for a pin or socket that is not securely snapped into the connector. Sometimes the harness and it’s connectors are the culprit and replacing parts never fixes it.
Hope this helps,
Bob
 
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  #40  
Old 12-22-2021, 06:00 PM
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Sorry to hear your throwing in the towel , sometimes it's not a bad choice , been there more than once and I have a hard time knowing when I've been beat .

I was really hoping you would have gotten this figured out . Merry Christmas !!
 
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