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01-07-2019, 07:24 AM
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#1
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Junior Member
Join Date: Jan 2019
Posts: 1
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Fuel fluctuations
Fuel gauge not steady. I noticed that when I turn off headlights, fuel gauge moves.
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01-07-2019, 07:41 AM
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#2
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Senior Member
Join Date: Jul 2017
Posts: 2,582
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Welcome to iRV2.
That's not much info to go on. Can you elaborate?
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01-07-2019, 07:42 AM
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#3
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Senior Member
Join Date: Jul 2014
Posts: 35,442
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Thats typically a dash ground issue.
All of the dadh lights come on and draw some power, leaving less for the gauges.
Unless its moving a lot, keep it above 1/4 and you really don't need to worry.
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01-07-2019, 09:43 AM
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#4
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,794
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Hi ! Welcome to IRV2! We're sure glad you joined the gang! 
I would suspect a bad wiring connection at the sending unit on the fuel tank! Have fun and keep her between the ditches!
Good luck, happy trails, and God bless!  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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01-07-2019, 09:50 AM
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#5
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Senior Member
Monaco Owners Club
Join Date: May 2014
Location: Satsop WA
Posts: 1,619
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Have to ask if it’s a Monaco?
When we had our Windsor all the gauges moved from normal with headlights on.
Typical grounding issue
__________________
2007 Alpine Limited SE
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01-08-2019, 11:05 PM
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#6
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Senior Member
Join Date: Mar 2017
Location: Zebulon, NC
Posts: 5,211
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  Welcome to the forum!
__________________
Kelly and Jerry Powell with Halo (Lethal White Aussie), Nash the Rat Terrorist, and now Reid, the "Brindle we have no idea puppy"
2020 Grand Design Solitude 390RK-R
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01-08-2019, 11:38 PM
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#7
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,397
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If it's always consistent (stays the same), then I wouldn't worry. Just do like twinboat says and keep it above 1/4 tank.
Remember, the genset will run out of fuel when you get to 1/4 tank anyway. If you need to use it for some reason, you will be out of luck if you are below that.
Happy Glamping.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand! 
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01-13-2019, 02:05 PM
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#8
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Senior Member
Join Date: May 2017
Location: Metamora, MI
Posts: 5,525
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another detail is if the symptom occurs at a certain gas level range. If so, then it points more to a sensor issue, and not external of the tank wiring.
But if that is the only symptom...I wouldn't worry too much about it.
__________________
2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
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01-13-2019, 03:33 PM
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#9
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Senior Member
Tiffin Owners Club
Join Date: Oct 2010
Location: Granger, TX
Posts: 595
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No problem. Remember the old Volkswagen? When the engine balked you kicked over to reserve fuel. Now, when the genset quits you are at 25%!
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