Q: My gas gauge is doing a funny little dance.

asked by on

As I was driving along, my gas gauge began to rapidly and randomly jump between empty and full. I know the car has nearly a full tank, and sometimes the gauge would stop in empty,while other times it would say the tank was full. What could be going on?

My car has 180000 miles.
My car has an automatic transmission.

The fuel pumps are all inclusive on what they call a fuel module or assembly. These modules include a float (quite like the float on your toilet) that tells the computer and your dashboard where the fuel level is at.

The issue may be with the pump’s float, with the sensor on the float, the instrument cluster for your dash board, or the wiring between the two. If you have never replaced the fuel pump, it may be time. If the float is wearing down, the rest of the components are getting close. Are any other parts of the dashboard acting funny? If not, the pump is likely the culprit. Be sure to have a professional mechanic, such as one from YourMechanic, take a look and replace the fuel pump.

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. My gas gauge is doing a funny little dance.

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: Radiator and engine leaks

Hi there. An inspection of the radiator for white residue will be necessary. Radiator leaks generally occur where the plastic side tanks are mated to the sides of the aluminum radiator core. If this is the case, the radiator will...

Q: The truck is from Georgia which doesn't have smog control. In California it won't pass smog. It has a new motor and transmission.

Hi, the blue-grey smoke you mention is your engine burning oil, probably due to worn piston rings or valve guides and seals. This is expected from an engine with 300K miles on it. Unfortunately for you, California has pretty stringent...

Q: Car is shaking at 60 MPH 60

Control arms and control arm bushings are a very common failure on your car. If there is even a slight imbalance in the tires and wheels, the effect will be greatly amplified by any looseness in the front suspension.The control...

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 Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...