Rick's Free Auto Repair Advice

Posts Tagged: fuel gauge isn’t right

Fuel gauge isn’t working or reading wrong amount

How to diagnose a non-working fuel gauge or a gauge that’s wrong If your fuel gauge isn’t working or is reading the wrong amount, the two most common causes are a bad fuel-sending unit or a wiring harness issue. Here’s how to diagnose and fix the issue. How the fuel gauge works The fuel-sending unit consists of a variable resistor, a float, and a float arm. The fuel-sending unit is built into the fuel pump module. The float rides on top of the fuel. As the fuel level drops, the … Read More


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