about gas gauge?

Question

how do you know for sure that the gas gauge is not working properly?

Answer 1

I had this problem, I filled the tank and kept track of the miles. I figured out approx miles I should get to a gallon of gas. I didn't fill the tank until it was almost empty and then I did the math tosee If it was close. Then it gave me a rough idea if it was accurate. Divide miles driven on that tank per gallons of gas it took to fill the tank.

Answer 2

i own a repair shop,and this can be determined by adding gas to it,if it doesn't move properly it may not be accurate,i usually fill one up ,and see if it goes to where it should,and if not when i run some of it out i replace the sending unit in the tank,the gage on the dash usually don't give a lot of trouble at all,just in a few cases i have seen a few of them go out,and that was like 1 in a hundred,but usually its the sending unit that gets out of whack on it,you can buy just a new sending unit,there not to bad high,but i usually get a good used one from a wrecked car ,there cheaper,and last as good, but you can sort of tell if its the gage on it it will fall down to empty once in a while ,and sometimes go to full when its not even full,you,ll just know when its bad,but have it checked out ,a good mechanic can tell you which one it is,,good luck,i hope this help,s,,and have a good thanksgiving.

Answer 3

Only one real way is to carry a gallon of gas and run it out and see what it takes to fill it up. Fuel gauge in the dash is the most highly inaccurate part of the car good to with in about 60 miles. Run out add the one gallon, reset the trip meter and fill up do it again. Now you know exactly how far you can travel one gallon in reserve. I use the trip meter more than what is showing in the instrument cluster and never run out of fuel.

Answer 4

When your car doesn't go any more ????