Forum Discussion

pwrplay's avatar
pwrplay
Explorer
Aug 31, 2014

Water pump is slow to shut off

We've started to use our water pump for the first time at a Provincial park for the Labour Day weekend and the pump seems to take a long time to shut off, or doesn't shut off at all.. This happens more often if you just open a faucet briefly enough to start the pump and then shut it off. It's like there is air in the lines after a quick run. If I run the water again for about 5-10 seconds, it will start to speed up and get louder and then finally shut off.

It's a flojet pump and there is no adjustments on it. I suspect that the diaphragm is leaking. Anyone else have/had the same issue?


Also the pump and plumbing are very very loud in this coach. Much much louder than my last TT. It seems no attention was placed in dampening the vibrations of this pump throughout the coach.
  • AlbertaNewbie's avatar
    AlbertaNewbie
    Explorer
    Sep 07, 2014
    Did you make sure the hw tank was full? Turn the pump on, make sure your hw tank is cool and open the blow off valve until water comes out.

    Mines super loud as well, just poor piping that is too close and non-flexible pump takeoffs which will soon be rectified.
  • KenK2020's avatar
    KenK2020
    Explorer
    Sep 07, 2014
    look for small leaks on the outside of your rig, my last TH was doing that and i found a faulty check valve at the city water inlet. Regardless, it's likely air in the lines from somewhere
  • pwrplay's avatar
    pwrplay
    Explorer
    Sep 02, 2014
    It doesn't have an accumulator tank, but I may install one and see if it helps. I haven't checked the strainer since this trailer is brand new and this was the first time using the pump.

    I've also heard good things about the Shurflo 4048 and that it is very quiet.
    I
    'm going to call Grand Design and see what they can do for me.
  • teddyu's avatar
    teddyu
    Explorer
    Aug 31, 2014
    Check the inlet strainer next to the pump for air leaks. JM2ยข...
  • Dusty_R's avatar
    Dusty_R
    Explorer
    Aug 31, 2014
    We have an '03 Itasca that we bought new. I have added an accumulator tank. The pump always slows down before shutting of, like it's a 2 speed motor. I've wondered about it at times but never worried about it. I don't even know what make or model it is. Maybe I'll check it out.
  • Dave_H_M's avatar
    Dave_H_M
    Explorer II
    Aug 31, 2014
    my pump will be noisy to the point of what I call a hammer. As Charles stated, I run all the faucets one at a time until I get all the burps out and all is well.

    But you need to know if you have an accumulator or not. I would not be without one.
  • RJsfishin's avatar
    RJsfishin
    Explorer
    Aug 31, 2014
    If it has an accumulator tank, it will do that. That saves wear and tear on the pump cycling.
    I've added an acum tank to every RV I've had.
  • wnjj's avatar
    wnjj
    Explorer II
    Aug 31, 2014
    Low voltage will do that too. Make sure you're getting the full amount to the pump.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,188 PostsLatest Activity: Jan 19, 2025