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  1. #1

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    throttle cable 99 xpl

    what are the wires the come out the black box where the throttle cable splits into 2?


  2. #2
    IIRC they are the wires for the Throttle Position Sensor

  3. #3

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    without sounding stupid what is its purpose? i run my ski on pre mix so only using 1 side of the cable. could do with renewing the cable and was wondering if could do away with the wires and get a new single cable made up?

  4. #4
    96XPSS's Avatar
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    It's purpose is to retard the timing through the MPEM based on throttle position. So if you want to burn a piston, disconnect it.

  5. #5

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    oooh think i'll leave that well alone then. cheers guys great help...

  6. #6
    PEST!'s Avatar
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    it chooses a different timing curve for partial throttle and WFO. It is important and has a special setup. It caused a piston to seize on my Ski but it was modded a lot. What it can cause is for the 3/4 throttle alleged lean spot to show up if you run near the 7k with the throttle switch still on partial open.

  7. #7

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    Quote Originally Posted by 96XPSS View Post
    It's purpose is to retard the timing through the MPEM based on throttle position. So if you want to burn a piston, disconnect it.
    It actually advances the timing. Either way, you want to keep the TPS plugged in and working correctly if you have a 99-02 twin coil setup-- 99 XPL...

  8. #8
    SURFnTURF's Avatar
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    Quote Originally Posted by jim View Post
    It actually advances the timing. Either way, you want to keep the TPS plugged in and working correctly if you have a 99-02 twin coil setup-- 99 XPL...
    +1 on the advancing it actually does this :

    The throttle cable features a hall affect switch that flattens the advance curve until it reaches 80% throttle. This feature provides a smoother midrange performance while maintaining maximum performance at wide open throttle. At 80 % throttle and above, the cable switches On, and the ignition advances as much as 12 degrees at certain rpms.


  9. #9

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    Or, you can just have your MPEMM re-programmed and get rid of the TPS entirely, like I have done with my '99 XPL.

  10. #10
    Quote Originally Posted by robert947 View Post
    Or, you can just have your MPEMM re-programmed and get rid of the TPS entirely, like I have done with my '99 XPL.
    Me too, when I finally get it running

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