Rick's Free Auto Repair Advice

Posts Tagged: erratice fuel gauge

Gas gauge wrong

My gas gauge reading is wrong This problem shows up as a gas gauge that shows Gas gauge wrong, different fuel levels, needle swings, shows empty when actually full, or any number of other crazy behaviors. There are two known causes for this problem. But first, let’s take a stroll back in time. In the old days the fuel sending unit had a variable resistor attached to a float arm. As the float arm went up and down, so did the voltage to the gauge. To troubleshoot the system, all you … Read More


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