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Thread: 2013 Tuono Fault Code P0187

  1. #1
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    2013 Tuono Fault Code P0187

    Hi all, Iíve had my tuono 6 months now and absolutely love it but since day one Iíve had a few little problems. Iíve sorted most but on the last ride out the bike went into limp mode a couple of times wile riding.

    Ive read the fault code and itís coming up with P0187, so I stripped the demand sensor and one side looked a lot newer than the other one that leaves me to believe that one side has already been replaced and now the other one has gone faulty.

    When the bike is plugged in to the Guzzidaig and Iím looking at the all the throttle data there is one thatís moving up and down by about 10 without me moving the throttle. This is leading me to think that the sensor has gone faulty and coursing the bike to go into limp mode.

    Has anyone else had this problem or any other suggestions?

    Thanks

  2. #2
    apriliaforum prov-nov
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    You have tried resetting the learning for both throttle and handle haven't you? Never had these issues myself but that'd be the first thing I tried before taking anything apart

  3. #3
    apriliaforum expert fr0st's Avatar
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    ^^^ this..

    Start with throttle learn.. and reset it before you do it.

  4. #4
    apriliaforum expert mikef4uk's Avatar
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    Throttle cal is performed at every ignition 'on' and is confirmed by brake light flashing.

    Handle needs to be done via Guzzidiag or Pads

    My Workshop manual disc says P0187 is front throttle body, unless some body knows different?

    Click image for larger version. 

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    Last edited by mikef4uk; 08-10-2019 at 01:05 PM.

  5. #5
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    I’ve done the throttle learning and still have the same problem. I’m going to have a look and clean the throttle body’s tomorrow. It only throws up the fault every now and again so will have to wait and see if it happens again when I’m next out on it.

  6. #6
    apriliaforum expert mikef4uk's Avatar
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    Check to make sure the linkage between the two parts of the throttle body is free from any obstructions, some have fitted aftermarket jubilee type clamps to hold the throttle body on to the rubber inlet and these have
    fouled the linkage in between either the front, or the rear throttle body

    As in this linkage here

    Click image for larger version. 

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    Last edited by mikef4uk; 08-10-2019 at 05:45 PM.

  7. #7
    apriliaforum expert mikef4uk's Avatar
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    If all else fails heres a megga cheap body

    https://www.ebay.co.uk/itm/NEW-GENUI...8AAOSwJcZWeo4H

  8. #8
    apriliaforum expert mikef4uk's Avatar
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  9. #9
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    Click image for larger version. 

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    After stripping the bike down and looking inside the air box I found this.

    Im guessing that someone has modified the stacks for some reason, covering up the holes on the side of them.

    Has anyone else come across is and should I take the tape off the side of them?

  10. #10
    apriliaforum expert mikef4uk's Avatar
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    Looks like some one has maybe tried shortening the inlets, as std they do not have any holes, they (As std) do appear too long for performance but Gabro says they are OK at that length.

    That tape will fall off once the petrol vapour gets to it, you need new ones
    Last edited by mikef4uk; 08-11-2019 at 04:17 AM.

  11. #11
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    Someone has cut holes in the side of the stacks and that’s what the tape is covering up so maybe in the past someone has tried to modify the stacks. But I can’t see that being anything to do with the problem I have, unless someone else tells me so.

  12. #12
    apriliaforum expert mikef4uk's Avatar
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    No, nothing to do with your problem, just check the front throttle body hasn't been off and the click clamps have been replaced by a screw type clamp, yours wouldnt be the first to have the tightening screw obstructing the butterfly adjustment

  13. #13
    apriliaforum expert pauldayona's Avatar
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    That tape does not come off, unless drowned in fuel for a long time. For max power the taped holes or not what you want, otherwise how much would it be, not much?

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