Yesterday, I left work with 109 miles on the trip odometer; usually at around 115 to 118 miles the low fuel light would normally kick on. Well it didn't, so I rode on knowing that I should be able to make it into town at about 120 or 125. Well I pull to the gas station with 129 on the clock and still no low fuel light. I fill up and it stops at 3.85 gallons. So I feed it a little more and it stops at 4.02 gallons. What gives? Is there a way to check the proper operation of that low fuel sensor?