Author [NL] [FR] [ES] [DE] [SE] [IT] Topic: Engine cutout on acceleration?  (Read 6136 times)

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  • Offline dlrph

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    Offline dlrph

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    • Bike: 2014 triumph trophy
    Engine cutout on acceleration?
    on: Sep 26, 2017, 12.31 am
    Sep 26, 2017, 12.31 am
    Hello all

    Had my 2014 TTSE for 2 1/2 years and 46K plus miles and loved every minute, but recently noticed something disturbing and wondering if anyone else has experienced this:

    after 40K service and very dirty throttle bodies mechanic suggested opening the bike up sometimes to keep things cleaner-as in a steady full throttle acceleration to redline in 2nd gear(in a suitably desolate stretch of road). Well upon doing so engine cut out very briefly at around 7K and 9K RPMs-continued to accelerate but still had a brief hesitation/stumble/cutout call it whatever.

    He suggested it may be the traction control kicking in and he was not able to duplicate it in 1st gear at the dealership. I disabled the traction control and still noticed the hesitation. No error codes appeared that I could find.

    So what gives?  Clutch slipping? Just wondering if anyone else has noticed this and if so how to correct it?

    Thanks for any help you can provide :002:

    Ride safe(and fast)

  • Offline Jubeeprince

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    Offline Jubeeprince

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    Re: Engine cutout on acceleration?
    Reply #1 on: Sep 26, 2017, 12.52 am
    Sep 26, 2017, 12.52 am
    If it was clutch slip, I'd expect the engine to still be climbing smoothly in RPM but no increase in speed.

    Probably down to either fuel delivery or ignition/spark issues.

    My $.02,


  • Offline swannie007

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    Offline swannie007

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    Re: Engine cutout on acceleration?
    Reply #2 on: Sep 26, 2017, 08.24 am
    Sep 26, 2017, 08.24 am
    You can turn the traction control off???? Never knew this.

  • Online Coconut   gb

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    Re: Engine cutout on acceleration?
    Reply #3 on: Sep 26, 2017, 10.19 am
    Sep 26, 2017, 10.19 am
    Triumph Traction Control ( TTC ) can be switched On and OFF
    via the main Settings / Adjustment / TTC Mode Menu

    Owners Handbook Page 53 :

    The Triumph Traction Control can be set to one of the following conditions:

    ON - the traction control will engage to control rear wheel slip;
    The warning light will be off but will flash on and off when the
    traction control  is working to limit the rear wheel slipping;

    OFF - traction control is disabled and the warning light is constantly on.

    Traction control will be enabled again when the ignition is turned off and then on.

    So if you didn't notice the TTC Warning light flashing, it probably wasn't that,
    and as it also happens with TTC switched OFF, it seems that is not the problem.

    If you think this problem was not present before the Servicing work,
    then it is a reasonable line of thought to investigate whether something
    done during that work has caused the problem, and one issue that does crop up
    occasionally is when the throttle bodies are not re-seated correctly in the rubbers
    ( quite a "fiddly" task ! ), giving rise to an air leak, which can result in "unusual"
    engine running behaviour, so it's worth checking that one.

    It doesn't "sound" like clutch slipping either, and I agree it could be due to Spark Plugs,
    or some sort of an electrical interruption. 

    Very difficult to diagnose remotely, as it could be a number of things :

    Spark Plug(s)
    Handlebar Throttle position sensor and associated wiring
    Throttle Position Sensor
    Main ECU

    Your Dealer says they cannot replicate the problem at the Dealership in 1st Gear -
    what did they do - Rev it up a bit on the Stand ??   :164: 

    I'd ask them to take it for a ride and actually do what they suggested you do,
    so they can experience the issue first hand !

    I don't know whether they are able to hook up to the Diagnostics port
    while riding, and record a log of events that may identify what's going on ?

    Cheers  :821:
    Last Edit: Mar 26, 2020, 03.06 pm by Coconut

  • Offline RocketSteve   gb

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    Offline RocketSteve

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    Re: Engine cutout on acceleration?
    Reply #4 on: Sep 26, 2017, 01.38 pm
    Sep 26, 2017, 01.38 pm
    I really don't like the sound of you Dealers suggestion to clear dirt!

    I've never heard of red-lining a petrol engine like he says - he might be thinking of Diesel  :087:

    I use a cap of fuel additive now & again, that keeps everything clean and clear.
    To test a man's character, give him (horse) power.

  • Offline nervouswreck   us

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    Offline nervouswreck

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    Re: Engine cutout on acceleration?
    Reply #5 on: Sep 26, 2017, 01.56 pm
    Sep 26, 2017, 01.56 pm
    My 2013 model had to have one of the ride by wire sensors changed but I don't remember which one, I think there are several.   When you opened the throttle aggressively it would fall flat on its face then accelerate moderately.  After the change all was good.  This was done at approximately 13000 miles while under warranty.  Now over 40000 and still working well. 

  • Offline Duck Tape

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    Offline Duck Tape

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    Re: Engine cutout on acceleration?
    Reply #6 on: Sep 26, 2017, 06.57 pm
    Sep 26, 2017, 06.57 pm
    It sounds like you have the 'slipping out of second gear' problem.  Search '2nd gear' on the maintenance thread and you will see several people who have had the problem where the bike will pop out of second for a moment and then back in again when it is in 2nd gear and turning 7,000 rpm or more.  If that's what is happening to you, you have a bent shifter fork and probably some wear on output gears 2 and 6.

  • Offline earthman   gb

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    Offline earthman

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    Re: Engine cutout on acceleration?
    Reply #7 on: Sep 26, 2017, 10.02 pm
    Sep 26, 2017, 10.02 pm
    *Originally Posted by swannie007 [+]
    You can turn the traction control off???? Never knew this.

    I totally forgot about this too, never actually tried turning it off to be honest. I'm wondering if it automatically turns itself back on every time you turn the ignition off and on? I know that happens in some 4 wheeled vehicles that I've driven, you just can't keep it deactivated.