Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 06-22-2014, 10:15 AM   #1
Senior Member
traveldogs's Avatar
Winnebago Owners Club
Solo Rvers Club
Join Date: Nov 2013
Location: Mesa, AZ
Posts: 292
Anybody have any success getting tank sensors to function properly?

Thinking that my Sani Con Macerator was malfunctioning, my father disconnected everything to test out the system, and we find out the tanks were empty, or nearly empty.
So....the black is empty and reads half, the gray will read half when I put a mere 2 gall of water down it.

2010 25' Class C Winnebago Access
2005 "Elly" Toad
Me: Cindy; RVM63; Tiny Dog Parade: Lilly, Charlotte & Binky
traveldogs is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-22-2014, 10:22 AM   #2
Senior Member

Join Date: Aug 2011
Posts: 3,337
Try looking at this previous thread that discusses your topic

Black tank monitor issue

pasdad1 is offline   Reply With Quote
Old 06-22-2014, 01:28 PM   #3
Senior Member
MandG-Fun's Avatar
Monaco Owners Club
Join Date: Oct 2012
Location: Westcliffe, CO
Posts: 876
You can spend a bunch of money continually pouring in tank cleaners if you choose, they may or may not work. As mentioned in the thread that Pasdad1 posted, fix the root of the problem and consider bypassing the internal tank sensors all together. The SeeLevel replacement system is simple to install and eliminates the internal tank gauges... problem solved and no need to pour money down the drain continuously on the latest and greatest tank cleaners.
Glenn & Mary
2000 Monaco Dynasty 34 York / 2015 Jeep Grand Cherokee Diesel
MandG-Fun is offline   Reply With Quote
Old 06-22-2014, 02:09 PM   #4
WILD-BILL's Avatar
Join Date: Aug 2011
Location: Brook Park Oh
Posts: 44
I installed the Horst Miricale Probes in both tanks of both mine and my parents MH's They work great.

Horst Mircacle Probes - Get accurate reading on your RV's holding tanks
1994 Winnebago Adventurer

230 hp Cummins 6 spd Allison trans
WILD-BILL is offline   Reply With Quote
Old 06-22-2014, 02:17 PM   #5
Senior Member
halfwright's Avatar
Join Date: Nov 2011
Posts: 601
When water backs up in the shower, I know my gray water tank is full. When I look down the pipe in the toilet and see stuff, I know my black water tank is full. The guages are useless.
Jim and Darlene Wright
plus Ryder,Poodle and
garbage disposal cross
halfwright is offline   Reply With Quote
Old 06-22-2014, 03:38 PM   #6
Senior Member
catonine's Avatar
Fleetwood Owners Club
Join Date: Apr 2009
Posts: 429
It seems that most tanks with the internal sensors, the sensors do not function properly. This is caused by "stuff" fouling the sensors. I have had the same problem in the past. But since I followed some advice given me by Col. Duckwitz on the Monaco board, I have had no problem. First you must clean the tanks as clean as possible, and keep cleaning them until you get the gauges to work properly. There is a lot of ways to clean these tanks and if you will check for post on tank cleaning you will find many. Then, pour in a few ounces of Rid-X and a few ounces of Dawn dish washing concentrate. You then continue to sue the Rid-x and Dawn in your tanks. You will not have odor problems and it keeps sensors cleaner. Just make sure you properly flush tanks when dumping. This works for me and a lot of others as well. But first and foremost you have to get the tanks as clean as you can and get the sensors cleared and working.
John- 2011 Fleetwood Southwind 32V
catonine is offline   Reply With Quote
Old 06-22-2014, 03:55 PM   #7
Senior Member
vsheetz's Avatar

Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 12,894
Mine work well most of the time, when they do act up it's the black tank and a couple three good flushings with the tank spray system sets it right again.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is online now   Reply With Quote
Old 06-22-2014, 05:32 PM   #8
Senior Member
becks's Avatar
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 2,560
Sea Level gauges from Garnet Technologies.
06 TS-42-DS04
1040 watts of solar
2014 Jeep Rubicon/2003 Honda CRV
becks is offline   Reply With Quote
Old 06-22-2014, 09:25 PM   #9
Senior Member
TBS-POPS's Avatar
Join Date: Nov 2013
Location: Valley Springs, Ca
Posts: 399
try this the next time you dump your tank. after dumping, put about 2 gallons of water a small bag of ice or empty your ice maker and a gallon of white vinegar , all of that sloshing around on the ride home cleans everything up nicely and the sensors get the stuff cleaned off them.
2018 Vilano 375FL
2017 F-350 CC DRW 6.7
TBS-POPS is offline   Reply With Quote
Old 06-22-2014, 09:58 PM   #10
Senior Member
chboone's Avatar

National RV Owners Club
Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,062
I use to have a problem with my tank sensors not reading correct and odors. I used everything suggest by other members on iRV2 and at the RV store. My level monitor always read correct and don't have any odors from either tank. I only use cheap laundry detergent and cheap dishwashing machine detergent, liquid or powder. Just dissolve the powder before adding to the tanks. I add at least one cup of each to each tank. I buy mine at the Dollar store or $.99 only store. When you dump the black tank use the tank flusher for at least 5 minutes every time. I have a clear fitting on mine so I can see when the water is running clear. You'll be surprised how much gunk comes out of the black tank the first couple of times. Been using them for almost two years and still see scale in my hoses when I rinse them.
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat 6.0 Diesel Crew Cab DRW, 4X4, B&W Custom Truck Bed, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000, 1994 36ft Avion 5er, GVWR 13,700
chboone is offline   Reply With Quote
Old 06-22-2014, 10:45 PM   #11
Senior Member
traveldogs's Avatar
Winnebago Owners Club
Solo Rvers Club
Join Date: Nov 2013
Location: Mesa, AZ
Posts: 292
Thanks Everyone!

Lots and lots of RVers do Dawn, ice and even Calgon water softener. Tomorrow when I start my trip back, I'll have ice in there, dish soap, and enzymes/bacteria solution. I mean I've already got that stuff. ..might as well use it!
Also, that I've been stationary in this spot for a month didn't help. Add to that I didn't let the tanks get full enough (due to the sensors!)
2010 25' Class C Winnebago Access
2005 "Elly" Toad
Me: Cindy; RVM63; Tiny Dog Parade: Lilly, Charlotte & Binky
traveldogs is offline   Reply With Quote
Old 06-23-2014, 06:05 AM   #12
Senior Member
ChallengerRN's Avatar
Join Date: Dec 2012
Posts: 2,080
Nope never look at them. If I see water backing into the shower I know I should of dumped sooner.

ChallengerRN is offline   Reply With Quote
Old 06-23-2014, 02:45 PM   #13
Senior Member
Fred and Bonnie's Avatar
Workhorse Chassis Owner
Join Date: Jan 2002
Location: Pacific Northwest or SoCal
Posts: 2,866
Send a message via ICQ to Fred and Bonnie
Originally Posted by ChallengerRN View Post
Nope never look at them. If I see water backing into the shower I know I should of dumped sooner.

Yep, that's my method, along with recognizing the sounds your drains make when the tanks are close to full.

Fred and Bonnie
2005 Dolphin LX 6375
Abby, Ruffles & Scarlett, "The Cats"
Fred and Bonnie is offline   Reply With Quote
Old 06-23-2014, 04:23 PM   #14
Senior Member
Fleetwood Owners Club
Solo Rvers Club
Join Date: Aug 2010
Location: S Western Indiana
Posts: 825
I have an old 92 Eagle and mine still work, both gray and black tanks as does the water tank. So do the battery monitors, and the propane monitor. However my odometer doesn't work nor the speedometer, I use my Rand McNally GPS for those.

We put in a new odometer and it only accumulated about an 1/8 of the miles and when we put it in the speedometer quit working. We are going to try and see where we put the old one, we kept it and put it back in, hubby said it might make the speedometer work again at least.

PatStab is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Water tank overflow in 33.1 Butte64 Palazzo Motorhomes 14 03-06-2015 06:42 AM
Black tank question osgoor Winnebago Industries Owner's Forum 69 08-24-2014 01:46 PM
New hot water tank line question ffspread Vintage RV's 2 06-06-2014 10:33 AM
Trouble emptying freshwater tank '06 Damon Daybreak John How MH-General Discussions & Problems 7 12-03-2013 05:18 PM
Axle hits water tank 2010 Surveyor Tom3205 Forest River Owners Forum 11 04-29-2013 01:19 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:30 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.