Fresh water pump pumps water but wont stop running.

MarcdohcMarcdohc Posts: 58 ✭✭
in Rinker Express Cruisers Forum
My 05 300 has another minor issue, Should I replace this pump? My fresh water pump pumps water just fine but wont stop running. I have run all my faucets for over an hour and unscrewed the outgoing water line to bleed the system. Am I missing something? Thanks in advance, Marcdohc
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  • BritinusaBritinusa Posts: 306 ✭✭
    edited April 2015
    Maybe the micro switch on the top of the pump is stuck, after taking mine apart i realized that this switch is what turns the pump on, when the pressure drop's there's a diaphragm than lowers under spring pressure and this activated the switch to turn the pump on, maybe yours is jammed or shorting out?
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  • Handymans342Handymans342 Posts: 10,375 ✭✭✭✭✭
    You have a leak or the pressure switch at the pump is bad.
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  • MarcdohcMarcdohc Posts: 58 ✭✭
    Thanks guys, I'll go check it out.
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  • MarkBMarkB Posts: 4,009 ✭✭✭✭✭
    Is there a leak in the system. If the water pressure is low due to a leak it will keep running.

    Boat Name: King Kong

    "Boat + Water = Fun"

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  • LaReaLaRea Posts: 8,068 mod
    Make sure the drain valve on the water heater is closed.
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  • explore7425explore7425 Posts: 150 ✭✭✭
    A clogged screen will also make this happen. Take it out and check it. I have had this problem. The screen was clogged but you couldn't tell from looking at it. It was like a clear scum that built up on the screen. Clogged filter = low pressure=pump running. 
    Bella Sabrina II  370EC
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  • MarcdohcMarcdohc Posts: 58 ✭✭
    hmmmm, was going to order a new pump. I'll take it apart and sea.
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  • terrypageterrypage Posts: 165 ✭✭
    I had this problem recently.  Eventually we found the leak coming from the cold water tap in the shower cubicle basin, leading to water collecting forward of the mid bulkhead and then discovering the failure of that bilge pump.   Big problem now sorted.
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  • MajorAppealMajorAppeal Posts: 81 ✭✭
    Did you ever get this resolved? This just happened with mine today, would like to hear your outcome.
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  • rasburyrasbury Posts: 8,954 ✭✭✭✭✭
    Only reason it keeps running is its leaking somewhere...
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  • J3ffJ3ff Posts: 4,229 ✭✭✭✭✭
    rasbury said:
    Only reason it keeps running is its leaking somewhere...
    nah, the pressure switch goes bad on these things all the time and then the only thing they are good for is a raw water washdown.. 
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  • rasburyrasbury Posts: 8,954 ✭✭✭✭✭
    I've never had a problem with mine other than replacing the whole pump.
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  • Liberty44140Liberty44140 Posts: 4,414 ✭✭✭✭✭
    Ha, yea don't bother with rebuild. The kit is so close to the cost of new better to just replace. 
    07' Cruisers 390 (Previous Rinker's: 06' 342EC & 01' 310FV)

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  • IanIan Posts: 3,062 ✭✭✭✭✭
    Check the seal around the filter that air isn't being sucked in.

    Regards,

    Ian

    The Third “B”

    Ravena Coeymans Yacht Club

    https://www.rcyachtclub.com/

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  • howardramshowardrams Posts: 223 ✭✭✭
    Some models have the pressure switch on the end of the pump and are easy to change without the whole pump.
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  • MarkBMarkB Posts: 4,009 ✭✭✭✭✭
    Definitely a leak, either on suction side drawing in air, or on discharge side leaking water.  Do you have water coming out of your taps without any air pockets?

    Boat Name: King Kong

    "Boat + Water = Fun"

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