Skip the auto shop - Our mechanics make house calls

Q: Gas gauge is not working correctly

asked by on

When I'm driving the gas notch shows me where I'm at with gas but when I start driving it goes down but I just put gas in it. What's going on?

If the gauge pointer on the fuel gauge is registering incorrectly, or fluctuating excessively (it can move a little depending on vehicle angle and motion), there could be a problem with the sending unit in the gas tank, the dash gauge itself and/or the interconnecting wiring. All of these components can be tested by a certified professional from YourMechanic during a mobile visit. It is not unusual for the sending unit in the tank to fail and those units are replaceable. But, first the issue has to be accurately diagnosed and you can rely on YourMechanic to do this by inspecting and servicing your car at your home or office.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Gas gauge is not working correctly

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: My temperature gauge is fluctuating and my car is not putting out heat anymore, I tried putting coolant in it and there are no leaks.

Hi there. Check the coolant temperature sensor and see if it has a loose connection on the wiring harness. This will cause the gauge to fluctuate up and down as the engine is running. For the heater not working, check...

Q: My car won't start. It acts like it want to start but will not.

Hi there, thanks for writing in. In many cases, when we have accessories running (like the stereo and the doors open that triggers lights) without the engine running, it can cause the battery to drain and loose cranking amps. When...

Q: Why does your service engine soon light come on

Hello, thank you for writing in. There are a large number of reasons why the check engine light would come on. To find out what the warning is trying to tell you, you need to have it scanned for diagnostic...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...