This car was just purchased for my son. When driving the car the gas indicator begin jumping between half and empty when the indicator dips below a half tank. Taking no chance of running out of gas, I would go to the gas station to fill the tank, but only to discover that the tank is half empty. What causes the indicator to jump back and forth?
SOURCE: Audi a4 fault
My guess is throttle body, it happened to me. Try cleaning it beacuse its 700 installed.
SOURCE: Fuel gauge broken on 2003 Audi A4
You have a fuel gauge sending unit problem, the gauge is not the problem, the sending unit is in the gas tank, u must remove the gas tank to replace it.
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