Sergio del Castillo wrote:
I plan to use that opportunity to correct the sensor for the fuel gauge. My is way off like pumping 18.5 gal with the gauge in the first notch left of 1/4 tank mark, and 12 gal with the gauge pointing one notch to the right of 1/2 tank mark. This is annoying.
Not to take this thread off-topic, but I decided to look into this.
The owner's manual says the tank capacity is 20.5 gallons. Since each notch on the gauge is 1/16, 20.5 gallons fills 16/16 of the tank. 20.5 / 16 =
1.28 gal per 1/16 of gaugeOne notch to the left of 1/4 tank mark is 3/16. To fill the remaining 13/16 of the tank, it takes 18.5 gallons. 18.5 / 13 =
1.42 gal per 1/16 of gaugeOne notch to the right of 1/2 tank mark is 9/16. To fill the remaining 7/16 of the tank, it takes 12 gallons. 12 / 7 =
1.71 gal per 1/16 of gaugeSo it's definitely not linear; the less fuel you have in the tank, the faster the needle moves toward Empty. It's possible that your float arm is bent or the resistance of the sending unit is somehow off, but if you're running the stock tune, it's likely that programming is at least part of the issue. GDE lists "linear fuel gauge" as a feature of their tunes, which implies the stock programming is non-linear.
Edit: Also note that these numbers aren't totally accurate since a.) the tank capacity is approximate, and b.) fuel gauges seem to normally be set up so there's still a bit left in the tank when the gauge reaches 'E'.