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02-21-2014, 06:05 PM
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#1
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Senior Member
Join Date: Jan 2014
Posts: 146
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Black Tank Sensor Bad?
Is my Black Tank Sensor bad? It always shows 3/4 even when empty!
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02-21-2014, 06:15 PM
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#2
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Senior Member
Join Date: Feb 2011
Location: Winston Salem
Posts: 272
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Mine never works, I just look in it when I flush lol.
__________________
2011 32bhds
TV 2002 Excursion 7.3 Few mods ;)
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02-21-2014, 06:37 PM
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#3
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Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,773
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The issue is toilet paper gets hung up on the sensors, and gives a false reading. The paper is wet, which completes the electrical circuit. There are replacement sensors that are less prone to this issue. Most people just look down the hole when flushing.
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02-21-2014, 06:56 PM
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#4
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Senior Member
Join Date: Mar 2013
Location: Planet Earth
Posts: 6,818
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I would check the probe connections first...look for the rats nest of colored wires on your tank and make sure all the crimp and spade connections are secure. Next I would fill the black tank and let soak at least several hours to thoroughly soften any dried paper....drain the tank and use a spray wand to bombard your probes.
Rinse and repeat as needed
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02-21-2014, 07:00 PM
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#5
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Senior Member
Join Date: Apr 2012
Location: Mississauga, Ontario
Posts: 121
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x2 with Threebutchers
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Barry and Lisa
with 2 Tollers!
2016 F350 PSD
2010 Jayco 30.5 RLS
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02-21-2014, 07:25 PM
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#6
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,852
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Most likely clogged w/ paper. We hardly look at the levels cause the black is not worth the worry.
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02-21-2014, 08:14 PM
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#7
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Senior Member
Join Date: Jan 2014
Posts: 146
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Quote:
Originally Posted by norty1
Most likely clogged w/ paper. We hardly look at the levels cause the black is not worth the worry.
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Thanx guys for all the help
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02-22-2014, 08:37 AM
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#8
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Senior Member
Join Date: Sep 2013
Location: Northeastern, PA
Posts: 141
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I have had to fill, soak drain and flush at least two cycles to get everything to work. Sometimes a different brand of black tank additive can make a difference. I prefer the ones that use an enzyme over the ones that merely mask the smell.
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02-22-2014, 12:33 PM
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#9
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Senior Member
Join Date: Dec 2012
Location: NW AR (God's Country)
Posts: 2,051
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Quote:
Originally Posted by hozerdude
Is my Black Tank Sensor bad? It always shows 3/4 even when empty!
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Sounds about right 
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Skip
2012 Eagle Super Lite HT 26.5RKS
2005 GMC 2500 SLT HD D/A
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02-22-2014, 06:45 PM
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#10
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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They never work right after the first week of use... just use the look down the hole when flushing method (if you can)
__________________
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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02-22-2014, 06:57 PM
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#11
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Senior Member
Join Date: Feb 2014
Location: Clinton, MT
Posts: 895
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They are worthless. We installed a "No-Muss Flush" and I must say I love this device. I had the dealer install it and it is set up to spray directly on the sensors in the black water tank. This is the way to go.
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2016 GMC Duramax Sierra 3500 HD Denali
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02-23-2014, 07:36 AM
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#12
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Senior Member
Join Date: Sep 2011
Location: Luray, VA (central Shenandoah Valley of VA)
Posts: 1,430
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Another option is installing Horst Miracle Probes. They fit in the same holes that the OEM probes use, and use the same wires. I have bought a set for black tank and both gray tanks, but have not installed them yet. Have heard that they really do work.
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Retired at last !
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