Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
Jayco RV Owners Forum

Thread Tools Search this Thread Display Modes
Old 07-24-2020, 11:43 AM   #1
Junior Member
Join Date: Jul 2020
Location: Virginia Beach
Posts: 14
Tank levels

I have a 2020 377 RLBH and my black tank shows full after a few uses. Like maybe 2 gallons of liquid...
I understand there may be debris on sensors inside tank, but I am wondering if there may be more to this.
Can anyone relate?
Thank you.
Danandbecky is offline   Reply With Quote
Old 07-24-2020, 12:04 PM   #2
Senior Member
CAG's Avatar
Join Date: Oct 2019
Location: Phoenix
Posts: 3,507
Probably not but to tell for sure you may want to use a spray wand down the toilet to the tank and a good spray out. On top of that the next time you move with the RV fill the black tank about 1/2 full of water, add some Dawn and allow it to "slosh" to where ever you are going and then dump. Using something like Happy Camper that "digests" the contents will help keep it clean also.

I am sure there will be other ideas of how to correct it but I would not get too concerned unless it just never changes no matter what. Most of us don't pay much attention to the indicators anyway. They are just not accurate.
2018 Jayco Greyhawk 29MVP
2019 Jeep Sahara Unlimited
2011 Cyclone 3010 Toy Hauler- Sold
2014 Chevy Silverado Duramax LML -Sold
CAG is offline   Reply With Quote
Old 07-24-2020, 12:04 PM   #3
Junior Member
Join Date: Jun 2020
Location: Missoula
Posts: 7
I have a 2020 245rlsw.....and I wish you the best of luck with this. There's just a sense that none of my tanks read correctly, or even close really. I'm going to raise a stink with the dealer when I take it in for a couple of warranty things, but I really don't expect things to get much better. I don't think any new RV goes out with accurate tank readings. Search the threads and again, good luck
Kinger33 is offline   Reply With Quote
Old 07-24-2020, 12:10 PM   #4
Junior Member
Join Date: Jul 2020
Location: Virginia Beach
Posts: 14
Tank levels

Thanks for the input. We move on Sunday, so I'll see if I can "slosh-clean" it out. Our last camper we did that and it seems to help a lot.
Danandbecky is offline   Reply With Quote
Old 07-24-2020, 12:29 PM   #5
Site Team
JFlightRisk's Avatar
Join Date: Apr 2012
Location: Newark, NY
Posts: 14,879
If your tank has been reading incorrectly since the first time you used it, there's a possibility the sensor wires may be connected wrong. It you can see them from underneath, from the top down, they should be red, green, then yellow and white near the bottom of the tank. I just found two wires switched on our gray tank sensors. They were connected wrong from the factory, so it showed full, when actually it was only 2/3rds full.

As above, rinsing well with a wand down the toilet is the easiest way to keep them clean. Our's still work correctly after 8 years.
If you're going to "regret it in the morning", sleep until noon.

2012 Jay Flight 19RD
2016 Ford F150 XLT 2X4 SC 3.5L Eco Max Tow
2010 Tundra TRD DBL Cab (Traded)
2 new fluffy Corgis, Bayley and Stanley
JFlightRisk is offline   Reply With Quote
Old 07-24-2020, 12:36 PM   #6
Senior Member
Joan617's Avatar
Join Date: Nov 2018
Location: Las Cruces (soon...)
Posts: 802
Yeah don't hold your breath on ever seeing those read accurately. I can't even trust the freshwater tank levels. It's not a Jayco thing, as they buy their components from common vendors. Others here have spoken highly of the "SeeLevel" brand of guages, but we decided to spend that few hundred $$ elsewhere.

One of the best tips I got here, (thanks Al Kruebbe) was spending $10-20 on a flow counting guage that mounts in line with a water hose to accurately measure the gallons of water going INTO a tank, be it freshwater or blackwater rinse. That little gadget has a million uses.

Joan & Angus Campbell
Winters in Las Cruces, NM, traveling the rest
2019 Pinnacle 36SSWS "Diana"
2019 F350 DRW Lariat CC Long Bed Diesel "Sheila"
3 Chihuahuas and 4 cats
We don't camp, we don't glamp, we LIVE.
Joan617 is offline   Reply With Quote
Old 07-24-2020, 01:09 PM   #7
Senior Member
Join Date: Jun 2016
Location: Newburgh
Posts: 6,212
Mine are 4 years old on my current camper and have always worked as close as possible to accurate until this current trip. Funny thing was when I left my last campground 2 weeks ago, I skipped the wand down the toilet piece of my tank maintenance routine for the first time. I believe there is truth in the flush from the bottom AND the top theory!

2022 33RBTS
Progressive Industries EMS - Hardwired
Equalizer 4 Point WDH
2021 Ford F350 7.3
Air Lift Rear Bags w/ On Board Compressor (Pending)
2016 28BHBE - (Traded and Missed already)
Marcm157 is offline   Reply With Quote

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

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 11:45 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.