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07-14-2015, 01:10 PM
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#1
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Junior Member
Join Date: May 2015
Posts: 10
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Tank level sensors
My tank grey & black tank sensors are not reading correctly. Showing near full after I empty tanks. Any suggestions?
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07-14-2015, 01:40 PM
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#2
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,713
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Ignore them.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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07-14-2015, 01:43 PM
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#3
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Junior Member
Winnebago Owners Club
Join Date: Mar 2014
Posts: 27
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Quote:
Originally Posted by Gary RVRoamer
Ignore them.
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Finding out that myself.
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07-14-2015, 01:52 PM
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#4
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Senior Member
Join Date: Nov 2014
Posts: 1,149
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CQR,
Try back flushing your black tank using a "Flush King" www.flushking.com The sludge in the tank on the sensors is causing the misreading. If you want other tips go to: www.allprowaterflow.com
Happy Camping
__________________
06 Holiday Rambler 45' PBQ
USAF Vietnam Vet 68-72
A1E/A1H Skyraider "SandyHobo"
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07-14-2015, 01:59 PM
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#5
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Member
Join Date: Apr 2011
Posts: 80
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You didn't say which rig you have .....but if you have the Aladdin system there is a calibration you can do to see if that is the problem.
the URL below will download an '04 Aladdin tank interface module doc with the sensor calibration instructions.
https://www.google.com/url?sa=t&rct=...97653015,d.dGo
__________________
-Byron
'05 Monaco Dynasty Diamond IV 42'
'07 Chevy Colorado Crew Cab 4x4
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07-14-2015, 02:09 PM
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#6
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Senior Member
Winnebago Owners Club
Join Date: Aug 2012
Posts: 413
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I agree with another post: Ignore them. I have had several RVs and none of them seem to do well. I currently have a Winnebago and they are supposed to be based on outside the tank - but still not reliable. Just look at the calendar or come up with a schedule if long term camping. Tank censors are just not there yet in my view.
__________________
 Gary and Karen Stone - stick home in Texas
LCMS Church - 2014 Minnie Winnie 31KP, 2014 Jeep Gary is N5PHT, Ham Op, Retired from Fed Gov
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07-14-2015, 03:26 PM
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#7
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Senior Member
National RV Owners Club
Join Date: Jun 2010
Posts: 4,581
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The fresh water gauge works well on mine so when it gets down under a quarter tank I figure it is about time to drain the tanks. I don't connect to park water unless filling the tank. I've had four motorhomes and one 5th wheel and never did the black/gray gauges work on any of them.
__________________
 Bob & Sandi, dogs Tasha a Frenchie and Tiki a Skipperkey
SW OREGON 2005 34 foot DolphinLX
If towing: a bright red 2016 Mini Cooper on a tow dolly.
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07-14-2015, 04:08 PM
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#8
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Senior Member
Fleetwood Owners Club American Coach Owners Club
Join Date: Mar 2011
Posts: 6,768
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We are on RV number six. The first four had monitoring systems that did not work. Our last two have been American Coaches with oem Sensa Tank Leveling Monitoring Systems. This system has worked flawlessly on both our coaches.
__________________
2014 American Eagle 45T
DD 13, 500 HP
Pulling a Honda CRV
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07-14-2015, 05:33 PM
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#9
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Junior Member
Join Date: Jul 2012
Posts: 4
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I had the same problem on my Sanibel. I changed to Horst probes and it works great now. They were easy to change out.
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07-14-2015, 06:26 PM
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#10
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Senior Member
Join Date: Dec 2012
Posts: 529
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There's info on the forum to clean the sensors i.e. driving with full tanks to slosh around the sensors, putting cube ice in before driving. Mine are erratic but seem to settle down.
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07-14-2015, 06:36 PM
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#11
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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We never had any trouble with our two Dutch Stars but they use external sensors. Having trouble with the Magna now (also external sensors) as the original owner didn't know or care to take care of it. When we first got it the black tank read 25% full when empty, now it takes a while to get there but I'm still getting old "stuff" out. Spent an hour last weekend doing nothing but flushing and draining the tank. Since I think we're not going to be able to go out for a while (DW's liver cancer treatments coming up) I'll get some Rid-X and let it work for a while.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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07-15-2015, 07:34 PM
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#12
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Senior Member
Country Coach Owners Club
Join Date: Dec 2010
Posts: 7,804
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This method works. It might take a few dumps but it does work. My 14 year old sensors work fine,
https://sites.google.com/site/cbruni/
__________________
Don
2002 Country Coach Intrigue
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07-15-2015, 11:26 PM
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#13
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: May 2012
Location: Today? Clayton, North Carolina
Posts: 5,093
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cqr, does your system have any calibration capability?
John & Diane, Fulltime since '12
2002 DSDP 40, FL, Cat 3126
__________________
John and Diane (RIP Lincoln, 21 FEB 22) RVM103 NHSO
Fulltimers since June, 2012
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
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07-16-2015, 02:07 PM
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#14
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2003
Location: Palisade CO
Posts: 3,588
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It isn't the sensors, it is crudded up tank walls that fool the sensors. Any thing that cleans the tank walls might help.
I have the TrueLevel non-contact system that Winnebago went standard with in 2005 (right after I bought mine of course so I had to add it) and right now my black tank reads full all the time. The gray started reading 2/3 full all the time few months after I installed the system.
I have pressure washed the black tank wall twice and it worked okay for a while then started reading full all the time.
In my years of trying all of the things people recommend I have not found anything that keeps the tank walls clean enough.
Summer before last the rig sat unused next to the house all summer with the gray tank valve open and a hose that drained into a stone filled hole. When we got ready to head south and ran some water, a bunch of dried crud that had been on the side of the tank ran out. Since then (including all last winter) the gray water level has been accurate.
Some people have reported that the Horst Miracle Probes work well. They shield and move the sensors out from the tank walls so the gunk doesn't fool them. However their web site is no longer active so I don't know if they are still in business. "www.horstmiracleprobes.com"
__________________
Clay WA5NMR - Ex Snowbird - 1 year, Ex Full timer for 11 years - 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.
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Linear Mode
