Q: Fuel gauge stopped working.

asked by on

I drove to work this morning and the fuel gauge showed 3/4 tank, no problems. Started the truck an hour later and the gauge showed empty and the gas light came on. I know the truck has gas in it. What can I do to check to see why the problem is?

My car has 36700 miles.
My car has an automatic transmission.

Hello. This is likely a sign of a faulty fuel sending unit. This is a unit inside the fuel tank that measures the fuel level inside the tank and relays this info to the ECU which then transmits this to the gauge as a readout as to the level. It can be a fairly big job to replace this as it requires dropping the fuel tank to get to it. If you need to have this taken care of, a qualified professional from YourMechanic can come to your car’s location to verify the problem and replace the fuel sending unit if necessary.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Fuel gauge stopped working.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Car noise at higher speeds on slightly rough roads

Hello there, many different items can begin to cause noise at this type of speed. In many cases this is not noticed as the highest speed limits in most areas is 85 MPH. The most likely cause is body noise,...

Q: Truck won't start unless I remove the fuel pump relay

Hey there. This is a sign of a failing fuel pump or potentially a faulty power connection to the fuel pump. As you know, if the fuel pump fails to supply adequate fuel pressure to the motor, this will cause...

Q: 1993 chevy z71 4x4 auto trans stuck in limp mode 2 gear only

Hi KC. Thanks for contacting us today. If I understand you correctly, you're having a problem with the vehicle being stuck in second gear - even after replacing the transmission. If this is correct, the issue is electrical as you've...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.