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Old 05-16-2016, 10:22 AM   #31
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I CANNOT STAND how inaccurate our fuel gauges are! Towing through the Tennessee hills last weekend and up through Kentucky, I had 415mi on a tippy-top fill up, no genny usage at all. I pulled off and could only squeeze in 41 gal between both tanks. I have purchased a Scan Gauge -d, which I hope will allow me to calculate my overall gallons used a little better than our janky gauge. Being someone who likes to strap in and get gone, the whole reason I bought a seneca was so that I can just getit down the road and not stop for bathroom breaks, food breaks, fuel breaks etc.
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Old 05-16-2016, 06:46 PM   #32
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1500 mile trip @ 10.5 mpg

From north Florida to Indiana and back I was getting over 10 mpg on 2016 senica with less than 1200 miles on odomiter at start of trip.
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Old 05-16-2016, 06:48 PM   #33
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Quote:
Originally Posted by memphis02 View Post
I CANNOT STAND how inaccurate our fuel gauges are! Towing through the Tennessee hills last weekend and up through Kentucky, I had 415mi on a tippy-top fill up, no genny usage at all. I pulled off and could only squeeze in 41 gal between both tanks. I have purchased a Scan Gauge -d, which I hope will allow me to calculate my overall gallons used a little better than our janky gauge. Being someone who likes to strap in and get gone, the whole reason I bought a seneca was so that I can just getit down the road and not stop for bathroom breaks, food breaks, fuel breaks etc.
That's the reason I traded my 40ft 5th wheel, get in and go stop when you please without having to get out of unit.
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Old 05-16-2016, 06:59 PM   #34
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Has anyone ever heard of a member who took their Seneca to a Freightliner dealer and had the fuel capacity sensor calibrated SUCCESSFULLY? I would be happy if it were just CLOSE to accurate. If half on the gauge meant I had roughly 35-42 gallons left, that would be leaps and bounds better than yesterday when my needle was buried on E, fuel light on and it only took 41Gal.
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Old 05-16-2016, 07:13 PM   #35
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I have a Freightliner down the road, I'll try to swing by there tomorrow to ask them that question about fuel gushed calibration. Let you all know somethings soon.
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Old 05-16-2016, 07:23 PM   #36
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I have been to my Freight dealer twice about this issue to no avail.......The best solution I was "offered" was to empty my tanks, add ten gallons and the physically "twist " the sensor so that it reads more gas then before.....however, my fear is that I now may have a false full reading instead of a false empty....
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Old 07-16-2016, 07:27 AM   #37
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We had that problem with our 2014. After 5 trips to freightliner they finally tested the dash and they found a problem with it. New dash and just a few shorter trips and it seems ok. They put a restricted on the gauge and we had to drive it 150 miles then tell them if the gauge moved. It took a lot of fighting with the local freightliner and calling higher ups to get someone to check something other than the sender. Keep taking it back until they try testing the gauge. The fuel gallons are marked on both tanks around the fill caps. 2014 has a 74 gallons total, one 40 and one 34.
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Old 07-16-2016, 08:20 AM   #38
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Just had my Seneca in this week for a 15000 service. Had the gauge inaccuracies checked again. They had previously replaced the sending unit which did not fix the problem. A Freightliner rep informed the mechanic to adjust an arm near the sending unit to improve accuracy. I filled both tanks on the way home and will not know if this last fix will help until I use most of the fuel in the tanks. In the past my gauge would read near empty and I could only squeeze in maybe 40 gallons. I sure hopes this improves accuracy.

The mechanic did say he could make more adjustments if necessary.
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Old 07-16-2016, 09:09 AM   #39
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We would fill up and 50 miles later the gauge was reading 3/4 tank. At 400 miles the gas light was on. Knew we were getting 8.5 to 9 miles a gallon but was afraid to trust that. Never put more than 50 gallons at fill up with gauge on empty
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Old 07-16-2016, 05:26 PM   #40
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That has almost been identical to my experience. My light would also come on before I had logged 400 miles. I would almost always refuel before 400 miles. Never put more in than 45 gallons or so. As you said, I just did not trust how much fuel I had left. I am anxious to see if this new fix works or at least make the gauge more accurate. I won't know for a while because we have no trips planed for a month or so. I will post results when I know. Sam
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