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General Discussion of preventative/corrective maintenance and other technical issues regarding your coach that are not covered in other Mechanic's Corner categories (ex. refrigerators, water heaters, and compressors).

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  #1  
Old 06-06-2011
Skyway's Avatar
Skyway Skyway is offline
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Default Fuel Gauge problem?

My fuel gauge didn't work when I purchased my BB...the PO thinks it is the sender...

When the ignition is turned off the gauge reads over full...about midway between full and the actual plastic edge of the gauge...

When the ignition is turned on the fuel gauge needle moves to the right until it hits the edge of the gauge window - plastic edge - as in even fuller...

I beleive the tank is probably about 3/4 full ...

Any opinions as too what is wrong or thoughts from those with experience would be greatly appreciated...

Where does the gauge needle ussually rest with the ignition turned off?

I have read as much as I can find on old threads about the topic, but am still unsure of the cause and solution...I have not pulled the sender yet..but will on my next visit out to the Bird depending on any comments or suggestions here...Thanks
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Les & Debra Willey
LesdotWilleyatSkywaySupplydotca
six04.7five6.192one
Mission, BC, Canada
88 WB40
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  #2  
Old 06-06-2011
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Ernest Ekberg Ernest Ekberg is offline
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If you have an access port in your kitchen, thats where the sender is
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  #3  
Old 06-06-2011
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Skyway Skyway is offline
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Yes, I have looked and found the 4 screws in the parquay floor...

Do you think it is the sender or the fuel gauge or wiring? Considering that it shows over full even when the ignition is turned off...
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Les & Debra Willey
LesdotWilleyatSkywaySupplydotca
six04.7five6.192one
Mission, BC, Canada
88 WB40
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  #4  
Old 06-06-2011
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could be a bad ground. all the items that you mention can lead to your symptoms
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  #5  
Old 06-06-2011
Frank W. Frank W. is offline
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Suggestion...do a Google search on "Troubleshooting teleflex fuel gauges" and you should find a nice guide for checking "most" analog gauges...may not be specific to your exact installation...but the overall guide gives you a good guide to get started on the right path. I've used this guide for boats and the BB.
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  #6  
Old 06-06-2011
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Skyway Skyway is offline
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Thanks Frank and Ernie, that brings up some usefull info... I am looking through it now...
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Les & Debra Willey
LesdotWilleyatSkywaySupplydotca
six04.7five6.192one
Mission, BC, Canada
88 WB40
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  #7  
Old 06-18-2011
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Skyway Skyway is offline
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Location: Mission, BC
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Default Fuel gauge problem update

I was at the coach yesterday..

I was able to uncover the sender and I removed the sender lead and a ground wire that was on one of the screws...

The fuel gauge acts the same with the sender and ground disconnected, but when I connect the sender wire to the ground the gauge goes to empty...

Using a meter on the sender but did not remove it and the meter reads the same as a open circuit..."1" on the meter...I don't have much knowledge regarding eletronics or understanding of using the meter but I did try a number of different meter settings under the resistence settings...

I am assuming the sender is bad and I will remove next time I am out there...so I can have a look at it and order a replacement if needed...

Thanks to everyone here...what a great resource...it gived me confidence to try some of these repairs myself..

The tank has three copper lines, 2 I guess, are the generator and engine supply lines..and I guess the one slightly larger line is a vent...there is also a nipple that is not connected to anything the kind that could have a small hose pushed over it (what is that for?)...

It looked like they used the access hole as a trash bin at the factory
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Les & Debra Willey
LesdotWilleyatSkywaySupplydotca
six04.7five6.192one
Mission, BC, Canada
88 WB40
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  #8  
Old 06-18-2011
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Bill Pape Bill Pape is offline
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Sounds like a bad fuel float sensor resistor, should read about 100 Ohms or less
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  #9  
Old 06-18-2011
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It looked like they used the access hole as a trash bin at the factory
You should see all the screws that we have found under the side runs and anywhere else they could leave them.
I need another bird job as I'm running low on those screws
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  #10  
Old 06-18-2011
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I believe the lines are main supply, return and genny supply. It could be that the genny and main use a common supply and return. In that case the third could be a vent.
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