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  1. #1

    2009 FX Cruiser SHO Overheat Warning - Help!

    Hi Everyone!

    I'm new to the Forum - did a heap of searches but so far not finding anything that will help me, so perhaps a few of you good people could chime in and give me a hand...

    I live in Malawi, Africa, and I have a 2009 Waverunner FX Cruiser SHO (1800 Supercharged) with around 70 hours on the clock. Two weekends ago, I took it out on the lake, and after cruising for about 40mins to some nearby islands, the Warning Light & Buzzer sounded on my craft, and the Engine Overheat indicator on the guage cluster flashed. Rev's dropped to around 3,300rpm and i had to limp to a dock on the island. Let it cool for 20mins or so, and then left the island back to shore, and had no issues going back. Strangely during all this, water was spraying from the 2 pissers on the left side so i figured it must be OK. Got it home and ran the YDS Diagnostics on it, no errors showing up at all as current (but it did show a record of Error 252 Overheat Warning at around 42hrs, with its previous owner. I purchased this craft at around 60hrs). In fact, a weekend or two before this episode, i had the SHO out on the lake for like 6 days straight with 50 to 60km journeys on it daily and no issues or problems at all...

    Then last weekend i took it out again, same lake, to the same islands. Halfway there, maybe 20mins into the lake, same Warning Buzzer. Turned around, and limped back to the docks. Pulled the craft out the water, and dismantled the jetpump to check the strainer sieve. All clear. Did an engine flush with the hose, all clear and no problem with the pissers, both working normally. Ran the YDS Diagnostics again, and nothing came up as error codes. All this and its still giving me this bloody Overheat Warning when im back in the water...

    Anyone got any more ideas on what i could check? Im stumped, and really stressed coz i can't figure out what could be causing this.

    Some help would be gratefully appreciated!

    Regards,
    Owen


  2. #2
    leejax01's Avatar
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    The pisser on the right side for the intercooler was working properly? What level is the oil and what brand/ weight used? Checked the thermostat?

  3. #3
    Hi Leejax01,

    Yes, whilst cruising the right pisser is working properly (and pisses at a higher pressure than the two on the left... Oil level is fine, and colour looks OK, it was serviced at approximately 50hrs by a Yamaha Service Centre in South Africa, so i'm sure oil is fine...

    Let me try check the Thermostat today. Should i remove it and test it in hot water to see if its opening up..?

  4. #4
    enforcer's Avatar
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    Quote Originally Posted by owencardew View Post
    Hi Leejax01,

    Yes, whilst cruising the right pisser is working properly (and pisses at a higher pressure than the two on the left... Oil level is fine, and colour looks OK, it was serviced at approximately 50hrs by a Yamaha Service Centre in South Africa, so i'm sure oil is fine...

    Let me try check the Thermostat today. Should i remove it and test it in hot water to see if its opening up..?
    Yes definitely check the thermostat. I had a very small piece of debris on my wife's Sea Doo and come to find out the rear pisser was flowing a tad harder than normal. Pulled the thermostat and what do you know there it was stuck slightly open and didn't close because of a very small piece of twig or some sort. Small enough to go through my Grocco strainer. Last but not least here is another trick, pump Lime-away into the cooling lines if you ride in salt water and let it sit in the line for about an hour. If any calcium or lime or the likes are in the head or a narrowed passage line, the lime-away may help it by removing some of the build up,oh by the way you can also put lime-away on the thermostat to eat away any build up on it as well.

  5. #5
    Hi Everyone!

    So i took the thermostat out this morning... I found it blocked by small stones / sandy debris... The spring couldn't compress because the stones were blocking its movements, and the little hole in the 'coin' of the thermostat also had a small stone in it. I think it probably sucked some sandy debris in at some point in its lifetime, and that has slowly built up until the spring couldn't compress. Washed it out thoroughly and removed all debris, and fitted it back in so im hoping that will be the end of the 'Overheat Warning' Gremlins...

    Our lake is a freshwater lake, 365 miles long and 52 miles wide, but the sand is quite course (almost like little stones) on the beach so probably to big to pass unobstructed through the thermostat....

  6. #6

    The debris from inside my Thermostat...!

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  7. #7
    @JC's Avatar
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    Lake Malawi looks like a hell of a fun place to ride, throw some pics or video up on the site here when you get a chance, would love to see it!

  8. #8
    @JC - Here's a few from my last couple of trips to the lake, its about 80km away from where i live so easy to get to... If you wanna see more pics of the lake, check my Facebook profile too, i've uploaded a heap of photos there too...
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  10. #10
    tuningforks's Avatar
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    Looks like an awesome area to ride! Glad you were able to fix your problem.

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