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Old 09-11-2018, 01:50 AM   #1
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Brand: Still Looking
Model: Fleetwood Storm 32V - pre
State: Alabama
Posts: 1,524
THOR #6826
Water pump behaving badly...

So my water pump has taken up a strange habit. After any faucet is turned off the pump will run for less than one second repeating every 12 - 20 seconds. Used to happen only occasionally now itís pretty much all of the time. Sometimes it stops after 4 or 5 ďburpsĒ, sometimes it goes on (and on, and on!). Sometimes turning the pump off and back on with the switch will stop the process. itís very annoying and canít be doing the pump any good either. I donít think the system pressure is bleeding off enough to trigger the pump and certainly it doesnít run long enough each time to generate much pressure.

Does anyone have any ideas or suggestions?

Thanks much.
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Old 09-11-2018, 01:54 AM   #2
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Brand: Thor Motor Coach
Model: Axis 24.1
State: Michigan
Posts: 8,012
THOR #1150
Perhaps one of its valves aren't sealing and its letting water go back into the tank; might be time for a new pump in that case.

Is a valve open letting water onto the ground (low point drain or something)?
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Old 09-11-2018, 02:12 AM   #3
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Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
Posts: 428
THOR #11781
I had that problem on my last coach. The culprit was the city water connection.
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Old 09-11-2018, 02:56 PM   #4
lug
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Brand: Thor Motor Coach
Model: ACE 32.1
State: Michigan
Posts: 82
THOR #11442
If the above recommendations check good then check the fittings on the inlet side of pump for tightness. Check the strainer for debris. A clogging strainer can induce pump cavitation.
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Old 09-15-2018, 01:50 AM   #5
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Model: Miramar 34.4
State: Iowa
Posts: 654
THOR #4488
I second the pump strainer. Remove, clean and reinstall hand tight.
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