After I fill up my tank, the digital gas gauge only shows 160 (mostly) to 215 (rarely) miles of range. It used to be ~ 310 +/- 15 miles. The analog gauge always goes from E to F when gassed up. You would guess that the sensor was off but whenever I need to gas up again, Both the analog gauge is near F and the digital gauge displays just 15 to 30 miles range remaining.
My tank holds 14 gallons and I typically need ~ 12 to 13 gallons with each fill up as it is tedious to completely fill up the last 2 to 3 gallons.
I've replaced the spark plugs, air filter and used fuel injector cleaner (3 bottles) plus used the Marvel Mystery Oil additive with each tankful but nothing has improved. It also passed the state emissions check recently.
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Hello, your "distance to empty" reading may not be valid. Or, it could be based on a lot of low miles, high run time activity from your engine and vehicle. For example, a lot of city traffic repeatedly may lower the expected "range" to the numbers you say. It's not exact in nature at all; it's calculating expected mileage based on historical performance.
Make sure you are fueling your tank with the key in the off position.
Calculate your actual mileage accrued on a tank of gas. Record your odometer reading at the time of fill up, and at the time you fill again, and then divide by gallons pumped the second fill up. That's a crude way of calculating miles per gallon.
Are your wheels and tires original equipment size as per the tire placard on the driver's door jamb?
