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08-01-2011, 02:11 PM
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#1
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Junior Member
Join Date: Jul 2011
Location: Western NY
Posts: 4
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Tank Level Indicator Question.
I have a 2007 jayflight 31bhs and when I empty by black or gray water my tank indicator still shows 3/4 or more. I dried out my black water tank and it now shows empty. My fresh water tank reads accurately. My gray water tank is empty and the drain has been open for 24 hours (so I know it is empty) and it still shows 3/4. When I hold the button down for a minute the 3/4 light goes out indicating 1/2 full.
Is this the norm or do I have a problem?
Thanks in advance for any help.
__________________
Gunny,
2007 Jayco 31bhs, Sway Pro 10k WDH
2011 Tundra Double Cab 5.7 4X4::woohoo::
Primus IQ controller
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08-01-2011, 02:16 PM
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#2
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,092
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This is the norm, I`m afraid. I have little faith in the indicators. Even my fresh tank when full to the brim reads 2/3. You can clean your tanks and may see some temporary improvement but no long term fix.................
__________________
2017 Coachmen Catalina 283RKS
2018 Ford F250 Super Duty 6.2l CCSB
2010 Jayflight 28BHS (sold)
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08-01-2011, 07:36 PM
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#3
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Senior Member
Join Date: Dec 2010
Location: North Idaho/Arizona
Posts: 5,446
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Chances are that the only tlime those gauges were correct was in 2007 when it left the dealers lot. You can somewhat rely on the frest water gauge and the battery gauge but not the others.
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08-01-2011, 07:55 PM
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#4
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Senior Member
Join Date: Nov 2010
Location: Pahrump
Posts: 4,037
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Would that these gauges were optional. Then we could all save a couple $$.
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'11 Eagle 320RLDS
'02 F350 PSD Dually 4WD
DW's Ride, '13 Expedition
'14 Denali XL
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08-01-2011, 09:30 PM
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#5
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Member
Join Date: Apr 2011
Posts: 65
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Quote:
Originally Posted by Gunny Bro
I have a 2007 jayflight 31bhs and when I empty by black or gray water my tank indicator still shows 3/4 or more. I dried out my black water tank and it now shows empty. My fresh water tank reads accurately. My gray water tank is empty and the drain has been open for 24 hours (so I know it is empty) and it still shows 3/4. When I hold the button down for a minute the 3/4 light goes out indicating 1/2 full.
Is this the norm or do I have a problem?
Thanks in advance for any help.
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Common problem with a lot of RVs. Most black tank and grey tank gauges are notoriesly innaccuate. Several solutions have been tried but few have worked.
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08-02-2011, 06:18 AM
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#6
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Site Team
Join Date: Nov 2010
Location: Fayette Ridges of PA, USA
Posts: 5,252
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If you're willing to make a small investment ($$$), this company manufactures products that will accurately measure the level of water (or whatever) in your holding tanks. I have RV friends that have their equipment installed so I know it works.
SeeLevel RV Gauges
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MODERATOR
TV: 2009 GMC Sierra 2500HD | Crew Cab | Std. Box | 4WD | Duramax/Allison
RV: 2000 Jayco Eagle 266 | FBS | TT
PREVIOUS: 1986 Coleman Laramie pop-up -- Still in the family!!!
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08-02-2011, 08:49 AM
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#7
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Senior Member
Join Date: Feb 2011
Location: Germantown, TN
Posts: 4,923
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What you end up doing is "learning" your tanks. What I do is start with the gauges, but like you said they are pretty inaccurate. Next - I took a flashlight to the toilet and looked down the hole. I watched it fill all the way up until it starts to reach the level of the floor. I was amazed at just how much I could get in there. I can pretty quickly gauge my tank level by just looking down the hole now. The gray was a little more tricky, but I find the gauge works most of the time after it has sat for a while and any splash has come off the sensors. If you have an open underbelly, you can also look under there and see how much the tank is bulging. It is actually pretty interesting how much the tank expands as it fills and can give you a good indication of how full it is.
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08-02-2011, 09:36 AM
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#8
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Senior Member
Join Date: May 2011
Location: Columbus Ohio
Posts: 148
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Each time I add chemicals to the black holding tank, I add 1/2 to 1 cup of liquid laundry detergent( cheap stuff) with a bucket of water, then as we drive down the road the tanks gets washed, when you dump the tank, the "stuff" smells better and the soap makes it slicker so far my tank gauges work. Same trick on the gray tanks,
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08-02-2011, 12:37 PM
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#9
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Senior Member
Join Date: Feb 2011
Location: SW Ontario
Posts: 1,393
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Quote:
Originally Posted by FPM III
If you're willing to make a small investment ($$$), this company manufactures products that will accurately measure the level of water (or whatever) in your holding tanks. I have RV friends that have their equipment installed so I know it works.
SeeLevel RV Gauges
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FPM III,
Thanks for the link. Looks like a nice system.
__________________
2013 Jayco Eagle 31.5RLDS
2018 Silverado 2500 HD Duramax
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08-03-2011, 07:01 PM
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#10
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Junior Member
Join Date: Jul 2011
Location: Western NY
Posts: 4
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Thanks for all the input. I have the tanks open and empty now for three days and they are reading 1/3. Looks like any moisture inside will give them reading errors.
__________________
Gunny,
2007 Jayco 31bhs, Sway Pro 10k WDH
2011 Tundra Double Cab 5.7 4X4::woohoo::
Primus IQ controller
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08-04-2011, 07:33 AM
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#11
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,720
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Quote:
Originally Posted by cutrell01
Common problem with a lot of RVs. Most black tank and grey tank gauges are notoriesly innaccuate. Several solutions have been tried but few have worked.
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New gauge that works... when the nasty stuff wont drop from the bowl.. and you are standing in gray water in the shower .. your tanks are full..... all kidding aside I just look down the toilet to see the black level.. and a few times taking a shower have filled the gray tank...
__________________
Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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05-22-2021, 08:33 AM
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#12
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Junior Member
Join Date: Jul 2020
Location: Delta
Posts: 4
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Fresh water tank indication
Any help on this please and thank you in advance.
I have a Jayco motor home29XS,
Stock tank indicator system, I get that they don’t read correctly in the grey and black tank, but the fresh water is where I have issues,
I’ve replaced the “resistor pack” and still get “0” reading on the fresh water tank, how do check the wiring back to the panel inside ?
I feel there is a break in there somewhere but can’t find it as the wiring so everywhere it shouldn’t.
I don’t know how to check the continuity of the wires or the marret type fittings.
Can someone help?
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