Reply
 
Thread Tools Display Modes
 
Old 10-16-2009, 01:32 PM   #1
New Member
 
Join Date: Aug 2009
Location: CA
Posts: 6
Default Holding tank sensor issue

Re: 2007 Roadtrek 190 Popular. We are on our first trip and are finding that even when we have emptied the grey and black water tanks, they still show 1/3 full. After 3 uses, they are reading "full". This does not seem accurate. Any feedback or ideas? Thank you, Bob Selby
__________________

rpns51 is offline   Reply With Quote
Old 10-17-2009, 09:33 PM   #2
Platinum Member
 
markopolo's Avatar
 
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 7,814
Default Re: Holding tank sensor issue

It's a common problem in most RV's (at least for me it is with the B, B+ & C RV's I own/owned).

Mine read 2/3rds full or even full after dumping. They'll both read empty after I really flush them out. Fill them with water and dump them until they read empty. Some people will put ice cubes in a half full black tank and drive around a bit and then dump it.

A clear sewer connector will let you see the color of what is coming out of the tanks. Flush them out until clear water is all that is coming out.

When we're away for while we just put up with it and know that we can go several days in between dumping.

Sometimes, about a half hour after dumping, the sensors will report the tanks as being empty.
__________________

__________________
Two bikes on sliding cargo box: https://www.classbforum.com/forums/m...icture206.html & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications: https://www.classbforum.com/forums/f...vana-5864.html
markopolo is offline   Reply With Quote
Old 10-18-2009, 02:38 AM   #3
Platinum Member
 
Join Date: Nov 2006
Location: Virginia
Posts: 681
Default Re: Holding tank sensor issue

Seems a problem of sorts in most RV's. Last week, we emptied our RT190P and flushed with water; still would show one-third. I decided since I was ready to do it, I flushed both tanks with Hot Water and Dawn....drove around for about 45 minutes and flushed again....I'm into stupid all the time!! Stupid in that the soapy water flowed right out, I rinsed until no more suds appeared --- but damned one-third was shining brightly, ha!! It settled down on a run a day or so later. Safe travels, Ron J.
__________________
Ron J. Moore
'15 RT210P
Ron J. Moore is offline   Reply With Quote
Old 10-18-2009, 12:42 PM   #4
Platinum Member
 
Mike's Avatar
 
Join Date: Aug 2008
Location: Sarnialabad, The Newly Elected People's Republic of Canuckistan
Posts: 3,215
Default Re: Holding tank sensor issue

I've noted the same results. It usually shows a higher level of contents reading just after dumping.
I'm assuming the sensor(s) need a while to "dry" before it'll show the correct level of contents.
After a bit of driving after dumping, the levels usually read where you'd expect them to be.
__________________
It's not a sprint(er) (unless you make it one), it's (hopefully) a marathon.
RV - 2018 Navion 24V + 2016 Wrangler JKU
Mike is offline   Reply With Quote
Old 12-30-2009, 04:34 AM   #5
New Member
 
Join Date: Nov 2008
Posts: 8
Default Re: Holding tank sensor issue

Once I saw an article or a post recommending pouring an ice bag in the toilet, drive around for half an hour and then empty the
tank. People use that technique to clean coffee pots. Maybe this has been posted already.
Best regards.
oschreiber is offline   Reply With Quote
Old 01-01-2010, 02:37 PM   #6
Platinum Member
 
Mike's Avatar
 
Join Date: Aug 2008
Location: Sarnialabad, The Newly Elected People's Republic of Canuckistan
Posts: 3,215
Default Re: Holding tank sensor issue

I don't know how effective it is, but it seems a lot of people use it (ice in the holding tanks).
It gets mentioned on a lot of RV tips and tricks pages.
I'm trying to keep a bit of RV antifreeze in my holding tanks all the time, along with whatever
the tank treatment of the day happens to be.
I don't think it hurts, and it may help keep to seals and gate valves lubricated.
__________________
It's not a sprint(er) (unless you make it one), it's (hopefully) a marathon.
RV - 2018 Navion 24V + 2016 Wrangler JKU
Mike is offline   Reply With Quote
Old 05-04-2010, 08:03 PM   #7
New Member
 
Join Date: May 2010
Posts: 1
Default Re: Holding tank sensor issue

We drop a 1/4 cup of Calgon bath oil beads down the toilet after emptying the holding tank and just leave it until the next tank dumping. This keeps the sensors clean and registering correctly. I don't think it would have to be that brand necessarily but it works for us.
Duffy is offline   Reply With Quote
Old 05-05-2010, 12:37 AM   #8
Bronze Member
 
Join Date: Feb 2010
Posts: 36
Default Re: Holding tank sensor issue

My DD and SIL's TT was having the same problem. I read on numerous forums using Calgon and ice and take it for a ride. My SIL laughed and said no way, but my DD decided to try it. My SIL had TP on his face . It worked.
__________________
Jim & Darlene, Ewok our Llasa
"Roada" our 2004 Roadtrek 190 Popular, Chevy
http://i837.photobucket.com/albums/z...P1000469-1.jpg
Y IZ IT is offline   Reply With Quote
Old 05-05-2010, 12:50 PM   #9
Platinum Member
 
Mike's Avatar
 
Join Date: Aug 2008
Location: Sarnialabad, The Newly Elected People's Republic of Canuckistan
Posts: 3,215
Default Re: Holding tank sensor issue

I've found that time is the best fix for sensors reading fuller than expected.
If we dump, and check the tank levels right away, they always still show the level
they were just prior to dumping, or just fuller than expected.
Check a few hours later or the next day, and they always
show green/empty. I think they just need a bit of time to dry.

We've never used ice cubes as a dump-aid, but it makes sense that it could help.
__________________

__________________
It's not a sprint(er) (unless you make it one), it's (hopefully) a marathon.
RV - 2018 Navion 24V + 2016 Wrangler JKU
Mike is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 11:22 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.