Skip the auto shop - Our mechanics make house calls

Q: My gas gauge keeps fluctuating from empty to full and everything in between.

asked by on

When I drive my car the gas gauge fluctuates between empty and full and I never really know how much gas is in the tank and when I park it the meter doesn't usually go back to e like it's supposed to. What can be the cause of this? And what's the typical repair price?

My car has 123624 miles.
My car has an automatic transmission.

The symptoms you are having may be related to a mechanical issue, or an electrical issue. If the problem is electrical, you will want to check the wiring terminal that connects to the fuel pump. You may need to drop the tank to access it. It will be beneficial to do so, if the problem is instead the float. On certain models of your vehicle there is an access panel that allows you to access the pump and electronics without dropping the tank.

To avoid any unnecessary repairs, I recommend having one of our mobile technicians diagnose the issue with the fuel component and service your fuel pump if necessary.

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. My gas gauge keeps fluctuating from empty to full and everything in between.

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: car overheated now want start

Hi there. Yes, unfortunately, white smoke out of the tailpipe along with oil mixed with coolant is typically a sure fire indication of a blown head gasket. With more than 200,000 miles, the cost of repairing this issue is probably...

Q: Gauges going crazy

This may be related to a short, a faulty instrument cluster or a faulty instrument voltage regulator. The instrument voltage regulator regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly, this...

Q: How does traction control help me maintain control of my car?

Introduced back in 1987 but required since 2012, traction control is a great standard feature found on almost all modern vehicles. Traction control utilizes the anti-lock braking system (ABS) and the vehicle’s throttle, for vehicles that are equipped with an...

Related articles

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 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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...