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2011 883 XL Sportster

  • FlatTurners
    FlatTurners
    1 month
    Hey Everyone, I have a 2011 883 Sportster with 10,000 km's that is causing me some grief. Starts and idles fine, accellerates and cruises at highway speeds just fine. However when riding at lower speeds, eg. riding through town at 60kph it misses and carries on. If I change down, it will go ok until I feather the throttle to maintain my speed, then the miss/surge returns. Same happens on my road to get home. As the road is a dirt surface I need to go slower, mainly 3rd gear and it misses and carries on, sometimes actually stopping for a brief second.
    I have checked my voltage regulator for charge etc. and it checked out ok. Have replaced the plugs, the only thing I have done different is I have had a new dash fitted with a tacho, fuel gauge etc 5 years ago and I can't remember if it was playing up before I had the new dash fitted or not. I have tried different octane fuel with no change in symptoms.
    Because of the miss/surge I don't ride it much, fuel is always replenished each ride though. Maybe plaque in the fuel system, not sure.
    Any help is appreciated.
    Cheers

  • OlChesnut
    OlChesnut
    1 month
    If you haven't done so already, some simple things to check:
    - The state of the air filter.  A dirty or blocked air filter may cause issues.
    - Put some inector cleaner through your fuel tank next time you fill up.
    These may not be the cause but they're simple things to do/check.

  • FlatTurners
    FlatTurners
    1 month
    I will do that, not sure how long it sat before I purchased the bike. The other thing I'm thinking is that whether or not it was tuned to the Screaming Eagle pipes that were fitted before I bought it.
  • OlChesnut
    OlChesnut
    1 month
    Tuning would be good to look at as well.  Dealers can usually detect whether the bike has had an ECU flash.
  • tussuck
    tussuck
    1 month
    replace the TPS... they get worn/dirty on the setting at near closed/1/8 throttle and make the engine splutter and act up.  A temp test would be to spray contact cleaner on the TPS wiper, but tbh its a cheap part and bloody easy to swap out.  (remember to follow manual instructions as the ECU needs to know and check the new values etc)
  • tussuck
    tussuck
    1 month
    or better still sell it to me.  I need a new one. 
  • FlatTurners
    FlatTurners
    1 month
    Have just cleaned my tps, will see how that goes. Do you know what is done when  screaming eagle mufflers are fitted?
  • FlatTurners
    FlatTurners
    1 month
    I have also noticed that when I retrieve dtc's (of which there are none), the last letter is a "b" not "t" and a "no response" message is displayed. I read that this will occur if no tacho is fitted but my dashboard has a tacho in the cluster. (after market). Maybe the ecm doesn't know it has a tacho fitted.
  • tussuck
    tussuck
    1 month
    Quoting FlatTurners on 19 Jan 2025 03:54 AM

    I have also noticed that when I retrieve dtc's (of which there are none), the last letter is a "b" not "t" and a "no response" message is displayed. I read that this will occur if no tacho is fitted but my dashboard has a tacho in the cluster. (after market). Maybe the ecm doesn't know it has a tacho fitted.

    There 'might' be something in the non-harley tacho.  So long as it works fine then no issue.
    Cleaning the TPS may/may not work, but you should in theory notice an improvement for a day or two.  (the TPS does not throw any error codes even when its on its way out as technically it still works)

    Screaming beagles should flow better so most folks fit a tweak somehow to adjust the fuel mix etc. 
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