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  1. #1

    2009 yamaha VX overheat warning

    My 09 VX cruiser overheat warning came on after 40 minutes and went into limp home mode.
    Left if for 10 minutes and everything back to normal.
    Took it out the following week and the same thing happened after about 40 minutes, pressing the mode button gave an indication of 01 (normal) not 15 as I would have expected.
    Dealer says may be the block or head is full of sand and estimates about $2500 to fix. The ski has 42 hours and have owned it from new, its used in salt water but flushed after every use for at least 10 minutes.
    Anybody got any ideas on what to do, should I flush with salt remover, or remove all the hoses or maybe the exhaust manifold? Thanks for any help.


  2. #2
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    Is it pissing out the side?

  3. #3
    what about thermostat

  4. #4
    infamous's Avatar
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    Quote Originally Posted by Aquaholic6801 View Post
    Is it pissing out the side?
    This. When hooked up to the hose check for moderate to strong flow out of the port pisser. Have someone give it short throttle bursts up to 3k while you look. That's a good place to start your diagnosis.

  5. #5
    Quote Originally Posted by STUNNA View Post
    Quote Originally Posted by Aquaholic6801 View Post
    Is it pissing out the side?
    This. When hooked up to the hose check for moderate to strong flow out of the port pisser. Have someone give it short throttle bursts up to 3k while you look. That's a good place to start your diagnosis.
    Water flow on flushing hose is in spurts but when throttle is open and ski is on the water the flow is good.

  6. #6
    Where is the thermostat located?

  7. #7
    on my fx140 its by the coils not sure on yours a service manual should help

  8. #8
    I have the full service manual but it does not refer to a thermostat anywhere.
    There is a thermosensor in both the block and exhaust as well as the temperature sensor in the block.
    Still can't locate a thermostat???

  9. #9
    Good flow when riding and spurts when idling on flushing hose.

  10. #10
    vxsport's Avatar
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    This happen to me on my vxr, and it was the main sensor!

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