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  1. #1
    race jase's Avatar
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    2003 MSX 140 problem

    Ok guys see if you can help me out with this one,
    I have a 2003 polaris msx 140 i have checked the following,
    Fuel pressue good
    Spark good
    Injectors firing
    Good voltage on wind over
    Now when i wind over the ski pops and back fires tries to start then fails again just like way advance timing so i installed a known to be good emm and bang started and ran perfect so deffinatly emm.
    I opened up the emm and replaced the C89 Capictor that everyone talks about plugged the unit back in and still the same symtoms so just to double check i installed another new capacitor still no go.
    Any help would be appreciated!
    Thanks
    Jase


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    There are other possible component failures within the EMM, not just C89.

    Did any of the components under the gel looked cooked or bubbling under the gel?

    Swap the 12 and 8 pin EMM harness connectors over to the spare and known good EMM. See if it now starts and runs.

    Then do the opposite, known good EMM plugged into 40-pin connector, 'bad' EMM plugged into 8 and 12 pin.

  3. #3
    race jase's Avatar
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    Everything looked fine under the gel and everything looked fine on the boards,
    I no longer have access to the good Emm but i have tried what you just described with another non going Emm still the same problem.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by race jase View Post
    Everything looked fine under the gel and everything looked fine on the boards,
    I no longer have access to the good Emm but i have tried what you just described with another non going Emm still the same problem.
    Sounds like the EMM needs a professional repair service. They will know the common component failures and how to test for them internally.

  5. #5
    race jase's Avatar
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    Yep thats what im thinking but dont really want to send it to DFI with there shit customer service and 6 month wait!

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by race jase View Post
    ... dont really want to send it to DFI with there shit customer service and 6 month wait!
    DFI is no longer the only game in town, and DFI themselves appear to have changed ownership.

    There is another recent thread discussing this.

  7. #7
    race jase's Avatar
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    Yea thanks K447
    I have just sent Harris EMMREPAIR a pm

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