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05-14-2022, 10:07 PM #21
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Water Pump Issues
This may be helpful. I found that one of the hose connections underneath the counter to the right of the kitchen sink in my 2018 GD 2600 RB became loose due to vibration from traveling to Caba San Lucas and back again to the Sequim, WA. When this happened, the water exiting the bathroom sink/ shower, and/or kitchen faucet was very, very weak. Go to the place in your unit where you would add antifreeze for the winter and make sure that all of those connections are tight. If the system is able to draw in any air due to a loose connection your water pressure from the freshwater water tank will be very poor. Hopefully, this may be helpful.
Steve Falcone
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05-14-2022, 10:08 PM #22
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This may be helpful. I found that one of the hose connections underneath the counter to the right of the kitchen sink in my 2018 GD 2600 RB became loose due to vibration from traveling to Caba San Lucas and back again to the Sequim, WA. When this happened, the water exiting the bathroom sink/ shower, and/or kitchen faucet was very, very weak. Go to the place in your unit where you would add antifreeze for the winter and make sure that all of those connections are tight. If the system is able to draw in any air due to a loose connection your water pressure from the freshwater water tank will be very poor. Hopefully, this may be helpful.
Steve Falcone
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05-15-2022, 05:05 AM #23
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- Sep 2019
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- Upstate NY
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We have a 2019 29RS with the exact same problem. I think it starts happening when the fresh water tank is about 1/4 filled based on how much comes out when I drain the tank. Purchased a water pump (SHURflo 12v 3.0 GPM Revolution RV Water Pump # 4008-101-A65-Same as original equipment) but decided not to install it at this time because I'm not convinced it will solve the problem. Also haven't found any leaks. It starts happening when the pump keeps running after the faucet is turned off and then sounds like its sucking air. I'm hoping there is a fix someone may have.
Thank You,
TB
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05-15-2022, 05:29 AM #24
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05-15-2022, 05:46 AM #25
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Thanks for your input Steve. I'm glad you were able to find the water pressure problem in your rig.
The water pressure in ours is good when the tank is more than 1/3 full. I would think an air leak outside of the FW intake line would always give me poor pressure. But what the heck do I know?
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05-15-2022, 05:52 AM #26
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- May 2019
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Sorry you have the same issue TB... But oddly comforting to know I'm not the only one...
In June, on our next trip, I will replace the water pump and filter basket to see if that fixes my problem. I'll post the results on this thread. As a side note, I'll be using the same water pump as you.
Stay tuned!Last edited by Boom 'r Bust; 05-15-2022 at 06:48 AM.
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05-15-2022, 06:45 AM #27
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I’m having the same problem too with my Momentum 21G.
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05-15-2022, 06:54 AM #28
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05-30-2022, 05:18 PM #29
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- Nov 2021
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- Michigan
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Imlayfield, I have the same problem with my 2022 Momentum 21G. The pump won't start picking up unless there is at least 9 gallons in the tank as measured with a flow meter. Once the pump starts sucking air, I can open the dump valve and there's my 9 gallons. All out of reach of wherever the pump pickup is in the tank.
Dave2022 Momentum 21G
2024 GMC Sierra 2500 AT4 Crew Cab
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05-30-2022, 06:50 PM #30
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Thanks for sharing! Has Grand Design taken any warranty position with your problem?
Tripp Layfield
2021 Reflection 315 RLTS - sold 8/22
2021 Momentum 21G
2020 Ram 2500 MegaCab 6.7L Cummins
Trying to get trailer camera wire...
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