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08-18-2018, 02:10 PM
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#1
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Senior Member
Join Date: May 2016
Location: Eastern Shore of MD
Posts: 133
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Gray Tank Issue
So I am currently having an issue with my gray tank always reading 1/3 full after a couple of camping trips ago. I have tried filling and emptying the tank several times, filling with a mix of dawn dish soap, simple green and water and emptying but still did not correct
Currently it is on day 3 with sitting completely full with a mixture of dawn dish soap, simple green.
From what I saw the ground sensor and the level sensors on the fresh water tank and the rear black/gray tank are on opposite sides of the drain so there should be no way something in the gray tank is connecting between the two to give me a false reading.
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08-18-2018, 02:40 PM
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#2
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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My opinion is don't lose sleep over them NOT working or you'll be awake A LOT! Differing opinions to follow!
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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08-18-2018, 02:46 PM
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#3
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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I couldn't tell you what my tanks read... never look..
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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08-18-2018, 02:49 PM
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#4
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Senior Member
Join Date: Oct 2016
Location: "Murvil, TN
Posts: 2,210
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You may want to edit your title......unless that is what you really meant!
__________________
2016 F350 King Ranch Crew Cab Dually Diesel 4x4
2018 Grand Design Momentum 394M
2023 Suzuki GSX-S1000GT+
Excessive payload capacity is a wonderful thing
"If it ain't Fast....It ain't Fun"
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08-18-2018, 02:51 PM
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#5
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Senior Member
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 2,007
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Quote:
Originally Posted by xrated
You may want to edit your title......unless that is what you really meant!
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Glad you said it first.
__________________
2018 Ram 3500 6.4 Harvest Edition
2018 Cougar 27RESWE
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08-18-2018, 04:37 PM
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#6
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,985
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Does your gray tank sensor always read 1/3 full (even when empty) or always read 1/3 full (even when the tank is full to overflowing) ???
Depending on your answer, it may be a bad connection on a sensor further up the tank or a problem with the connections grounding out because of a pinched wire.
When is your tank sensor reading 1/3 full and do any of the other sensor lights ever light????
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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08-18-2018, 04:43 PM
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#7
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Senior Member
Join Date: May 2016
Location: Eastern Shore of MD
Posts: 133
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Yes I am referring to the GRAY tank. I know it is not uncommon for the black to be wrong but not the gray.
at Empty it reads 1/3 full but when it gets past that the lights (1/2, 2/3 and full) work fine
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08-18-2018, 05:09 PM
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#8
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Senior Member
Join Date: Apr 2015
Location: nm
Posts: 1,833
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Open the valve let the condensation dry out it should drop to empty . I just don't think it's worth the time trying to make the gauges work, my fresh water dosnot work right .
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
Anderson ultimate hitch
2015 311 Impact Fusion toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2018 800 Z force spot BUGGY.
500 watts of solar enough power for boon docking.
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08-18-2018, 05:20 PM
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#9
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Senior Member
Join Date: Oct 2016
Location: "Murvil, TN
Posts: 2,210
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Quote:
Originally Posted by 66joej
Glad you said it first.
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Hey, some of us are just natural born leaders......what can I say?
__________________
2016 F350 King Ranch Crew Cab Dually Diesel 4x4
2018 Grand Design Momentum 394M
2023 Suzuki GSX-S1000GT+
Excessive payload capacity is a wonderful thing
"If it ain't Fast....It ain't Fun"
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08-18-2018, 05:31 PM
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#10
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Site Team | Emeritus
Join Date: Jan 2014
Location: Western PA
Posts: 2,732
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as previously stated, I do not pay any attention to these crazy lights !! Only concentrate on the black tank and then only when it starts burping. No need for lights just empty it "Its Full"
__________________
2013 RAPTOR 300MP w/Rear Patio Deck NO Folding Side Ladder
2013 Silverado 3500HD LTZ CC LB 4X4 DRW
Duramax 6.6L Turbo Diesel; Allison Trans
Reese 20K; Carlisle Radial Trail RH/HD; TPMS (12 Tires)
Veteran
PSU (GO LIONS)
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08-18-2018, 06:12 PM
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#11
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,327
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HOT water with dawn ultra blue has fixed gray tank sensor issues 100% of the time. Even the class C I
Just did that didn’t read at all.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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08-18-2018, 06:21 PM
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#12
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Senior Member
Join Date: Apr 2018
Location: Divide
Posts: 267
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Mine reads 2/3 full all the time. We things start gurgling I empty it.
But I am going to try to get it fixed on the so called life time warranty my wife bought.
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08-18-2018, 06:31 PM
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#13
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,743
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Quote:
Originally Posted by xrated
You may want to edit your title......unless that is what you really meant!
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Dang, looks like I tuned in late and missed the fun!
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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08-18-2018, 06:39 PM
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#14
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,327
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Quote:
Originally Posted by BamaRam
Mine reads 2/3 full all the time. We things start gurgling I empty it.
But I am going to try to get it fixed on the so called life time warranty my wife bought.
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Let me know how that works out.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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08-18-2018, 08:11 PM
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#15
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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[QUOTE=BamaRam;302850
But I am going to try to get it fixed on the so called life time warranty my wife bought.[/QUOTE]
From my experiences that how long it'll take to get them to work!
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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08-19-2018, 01:54 AM
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#16
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,743
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Defenition of lifetime warranty, you'll spend the rest of your lifetime waiting for the claim to be paid.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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08-19-2018, 06:20 AM
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#17
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Senior Member
Join Date: Sep 2013
Location: Essexville, MI
Posts: 262
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Quote:
Originally Posted by flybouy
Defenition of lifetime warranty, you'll spend the rest of your lifetime waiting for the claim to be paid.
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Now that is the truth.
__________________
2014 Passport Elite 31RE
2017 2500HD Crew Cab
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08-26-2018, 08:27 AM
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#18
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Senior Member
Join Date: Jul 2011
Location: Lehigh Acres
Posts: 176
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I was very tired of having all three tanks not reading correctly. The standard sensors are little flathead buttons which get covered with residue. The residue is very hard to remove with out removing the sensors and cleaning then or replacing them.
If you are going to replace the probes may I suggest what I replaced all three of my tanks with:
Valterra Horst LLC T21301VP TANK PROBE, BLACK WATER, and Valterra LLC T21302VP TANK PROBE, GRAY WATER, and FRESH WATER TANKS.
When I was replacing them I noticed that the lowest sensors on each tank was at the same Hight as the ground sensors. This is the 1/3 mark. When I have empty tanks they read empty when the truck is level. I keep the fresh water tank full. But keep some water in both the gray and black water tanks. This shows 1/3 full because my trailer sits at a slight angle toward the sensors. The bottom sensors are only about 1” up from the bottom of the tank. This is why it reads 1/3 full.
You can check out the Video on these sensors on you tube. https://youtu.be/iABA43tHVXI
Hope this helps.
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08-26-2018, 08:36 AM
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#19
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Member
Join Date: Apr 2012
Location: Oregon
Posts: 68
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Why worry about it. It's grey water. If it gets to be more than one turd full, and you have all lights working - drain it and forget it.
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08-28-2018, 08:15 AM
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#20
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Junior Member
Join Date: Nov 2013
Location: Mesquite
Posts: 6
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Quote:
Originally Posted by rsl
Yes I am referring to the GRAY tank. I know it is not uncommon for the black to be wrong but not the gray.
at Empty it reads 1/3 full but when it gets past that the lights (1/2, 2/3 and full) work fine
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I have had a Laredo 5th wheel for 5 years now and other than the first several months, none of the sensors have worked. Grey always shows 3/4 full, black, always full, and fresh water always empty.
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