brianseay1
Bridgeport, Ala USA
Senior Member
Joined: 04/23/2004
View Profile
Good Sam RV Club Member
 Offline
|
My fuel gauge has been off by an 1/8 of a tank for a couple years and never really worried about it. But today when I filled it up it is a full 1/4 off. What is the best way to fix this issue ? I have changed out fuel tank sending units in my old mustang, but have never did it on a motorhome. What do you guys think will be the best way to fix it ? Any suggestions are greatly appreciated.
Brian & Neena & B.G.
B.G. 2014 Goldendoodle
2007 Coachmen Cross Country 389DS
300 HP Cummins Turbo Charged
03 Sahara Jeep Wrangler & 05 Harley Davidson Ultra Classic
2014 800 RZR4
Roll Tide Roll
|
Home Skillet
Pearland Texas
Senior Member
Joined: 10/21/2004
View Profile
Offline
|
Sometimes, ethanol can build up on the fuel sender "card".
Running Techron additive in the tank can clean the ethanol off.
2005 Gulf Stream Conquest 31ft
BigFoot Levelers,TST in tire TPMS,Bilstein Shocks,Trans temp guage,Lowrace iWAY
|
RLS7201
Beautyful Downtown Gladstone, MO
Senior Member
Joined: 10/26/2002
View Profile
 Online
|
Home Skillet wrote:Sometimes, ethanol can build up on the fuel sender "card".
Running Techron additive in the tank can clean the ethanol off.
Would you please define "fuel sender card" I've not heard of this item before. Also how would ethanol get in the diesel fuel of the OP's fuel tank?
Richard
95 Bounder 32H F53 460
2013 CRV Toad
2 Segways in Toad
First brake job
1941 Hudson
|
Home Skillet
Pearland Texas
Senior Member
Joined: 10/21/2004
View Profile
Offline
|
RLS7201 wrote:Home Skillet wrote:Sometimes, ethanol can build up on the fuel sender "card".
Running Techron additive in the tank can clean the ethanol off.
Would you please define "fuel sender card" I've not heard of this item before. Also how would ethanol get in the diesel fuel of the OP's fuel tank?
Richard
Sorry. Didn't realize the OP had a diesel.
Fuel sender card is the resistor/circuit board that the float makes contact with.
|
Horsedoc
Dixie --- N. Georgia
Senior Member
Joined: 09/30/2002
View Profile
Offline
|
What chassis is your coach built on? Freightliner has a Service Center in Gaffney that did a lot of work for us when we had diesel coaches.
Sounds like a sending unit going bad, but maybe(?) the electrical connections just need cleaning?
horsedoc
2008 Damon Essence
2013 Jeep Sahara Unlimited
Blue Ox tow
|
|
|
GringoScot
San Antonio
New Member
Joined: 05/25/2023
View Profile
Good Sam RV Club Member
Offline
|
brianseay1, I had a similar problem on my Monaco....1/8, then 1/2. then totally out in right field!
My problem was a failing fuel sending unit AND a bad gauge.
First I called the fuel sender company and they emailed me a document to test my sender, proving my sender was bad.
I ordered a new sender and installed it, but my gauge still was not correct.
I went to an auto parts store and bought a cheap fuel gauge and borrowed a 12VDC car battery.
I opened the driver side fuel door and found the wires leading to the fuel sender attached to the diesel fuel tank.
I marked each of these wires and disconnected each and electrical taped all ends.
I then ran wires from the fuel sender to the new gauge and battery.
The battery was at my feet and the new gauge was on the fuel tank next to the fuel sender......this was basically a test bench.
I unscrewed the fuel sender from the tank and lifted the sender up out of the tank simulating less fuel in the tank.
This should show the fuel gauge moving towards empty.
The new gauge reflected this.
When I disconnected my "test bench" and returned the wire connections to the fuel sender, my gauge still did not show the value that was on the new, test gauge.
New gauge went into the dash, old gauge became a rifle target, and all is reflecting correctly now....1/8 is 1/8, 1/2 is 1/2, and full is full. I have many detailed photos of this test that I could email you....just send me a PM.
|
merc09
Pueblo
New Member
Joined: 05/26/2023
View Profile
Offline
|
Try restarting the vehicle's system by disconnecting the battery for a few minutes and then reconnecting it. This may help reset the errors and return the gauge to normal operation. Check the wiring and sensors.
https://carminho.com.pt/
|
JRscooby
Indepmo
Senior Member
Joined: 06/10/2019
View Profile
Online
|
For years I always felt bad because everything on my old truck worked except the fuel gauge. Could make work, but not accurate
Then I heard about space shuttle mission delayed several times because "fuel sensors malfunction". With their budget, and only used few times, they still had fuel gauge problems? I'll just put in what I expect to use today, or fill it up and use my trip meter. If I loose track, carry old CB antenna for dipstick.
|
