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  1. #1
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    Mar 2010
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    Sylacauga, AL
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    XR6 Overheat Alarm

    I'm getting an overheat alarm on my XR6 when running at speed. Water pressure is good and I'm getting a good stream out of the hole. I'm not sure about motor height, but it is not set high on the jackplate. Any ideas beside the obvious water pump impeller that may be causing this? It doesn't do it all the time, and when it does, I can kill it and alarm will stop after I let it sit for about 30 seconds.



    Cameron Gillespie
    03 Bass Cat Sabre
    Mercury XR6 150

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  3. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    Apr 2008
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    #2
    Cameron:

    When chasing down cooling system problem, you should ALWAYS, ALWAYS start at the SOURCE: The Water Pump.

    Use a COMPLETE kit, including ALL THREE GASKETS (especially those BELOW the impeller plate and the water pump base).

    Part# 96148A8 is a cost-effective complete kit for your engine.

    ONLY AFTER this has been done, is it appropriate to move to other potential causes (poppet valve, thermostats, etc).


    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  4. Member
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    Mar 2010
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    #3
    It's been a couple of years since I replaced impeller, so I'll replace that and change the lower unit lube while I've got it dropped. I haven't used the boat as much this year, so I wonder if that has something to do with it.



    Cameron Gillespie
    03 Bass Cat Sabre
    Mercury XR6 150

  5. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    Apr 2008
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    #4
    Cameron... be SURE to get a complete KIT.


    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  6. Member
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    Nov 2012
    Location
    Georgetown, Ky
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    #5
    I've got a 2000 150 XR6 that needs a new water pump. The pump the dealer gave me when I stopped by is part # 46-96148T 8. My question is will this kit be ok or is there a difference between this one and the part # posted above? Thanks in advance.

  7. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #6
    Quote Originally Posted by C-4-C View Post
    I've got a 2000 150 XR6 that needs a new water pump. The pump the dealer gave me when I stopped by is part # 46-96148T 8. My question is will this kit be ok or is there a difference between this one and the part # posted above? Thanks in advance.
    Welcome to BBC!

    96148A8 and 96148T8 are virtually identical (except that one comes in a white box, the other in a nice hanging "blister pack").


    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  8. Member azbassman352's Avatar
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    Mar 2011
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    Hinton
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    93
    #7
    My issue with the overheating was solved with a new poppit valve kit. I had two impellers installed and the overheat alarm would keep happening. I own a 2003 150 XR6.