jt29
So.Cal
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Joined: 06/09/2006
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I have a 99 Ford 350 Class C gasoline motorhome Winnebago. After a trip I parked the MH with about a 1/2 tank of fuel or lees. We did not use the MH for about 4 to 5 months.
When I picked the MH up from storage I noticed that the fuel gauge on the dash was reading full. I know I parked the MH with only a 1/2 tank of fuel or less so I know the gauge is wrong (I even topped it off to make sure). I have been searching for weeks and cannot find the answer to my problem or where to start?
The fuel gauge reads empty when the ignition is off, but when you turn it on the gauge immediately goes to full and stays there. So the gauge does move but only from empty to full when you turn it on or from full to empty when you turn it off? Looking for some help, and hoping I do not need to drop the tank! Thanks
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enblethen
Moses Lake, WA
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Joined: 01/05/2005
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I would say a connection is suspect. If like many Fords there is a paddle like connection near the tank. If the connections are corroded the unit will not read correctly. Not sure which way Fords read whether high resistance is full or empty.
Bud
USAF Retired
Suzuki XL7 pushing Pace Arrow
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Dr Quick
M'boro, Tn
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Joined: 08/25/2004
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Could also be a bad fuel gauge, as they can read full all the time when they go bad.
It would be the sending unit in the tank that would cause this problem.
* This post was
edited 06/14/12 08:25am by Dr Quick *
Dr Quick
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rywilsonbc
Windsor Ontario
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I am having the same trouble with mine. Fuel gauage reads full all the time (while on gas). My beast is dual fuel (gas / propane), I know its not the gauge as when I switch to propane the gauge works fine.
From what I read it could be the sending unit or a connection somewhere. Some thing about resistance and if there is no resistance the needle defaults to Full (could be the other way around).
I am also in search of a solution hoping that I don't need to drop the tank (a project in the next few weeks if no solution is found) as it would involve a total replacement of the tank because apparently I cant get a sending unit for my current tank.
If you happen to find a culprit thats not the sending unit, please let me know id be glad to look elsewhere :-)
Endeavour is a work in progress. Feel free to check out her story as it unfolds. myrvendeavour.blog.com
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Sunseeker skiers
Beaverton, OR
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Joined: 01/24/2008
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Last 10k miles I have twice rebooted my engine computer to fix a stuck fuel gauge. Just pull the ground off the battery for a few seconds and then recconect. Cars and trucks now adays are nothing more than ornery computers with wheels. Gotta pull the plug on them every once in a while.
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NewsW
US
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Joined: 02/06/2012
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Sunseeker skiers wrote:Last 10k miles I have twice rebooted my engine computer to fix a stuck fuel gauge. Just pull the ground off the battery for a few seconds and then recconect. Cars and trucks now adays are nothing more than ornery computers with wheels. Gotta pull the plug on them every once in a while.
Excellent suggestion.
Do a gauge sweep test as well.
Then start working on corroded wiring as causes.
If you can reach the sender wiring, start there.
Then all the way to the dash wiring.
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jt29
So.Cal
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Thanks everyone for your help. I will start with disconnecting the battery and work my way back from there. I will let you know what happens? Thanks,
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