Q: Gas line stays on F when car is turned off

asked by on

Yesterday 5/28, I filled my car up with gas and when I got home to cut my car off, the gas line stayed on F after the car was shut off. I cranked the car again and turned it off, but the line still stayed on the F mark.

My car has 76100 miles.
My car has an automatic transmission.

I’m assuming the the gauge usually drops down to "E" on this particular car. Some vehicles gauges stay in the last spot they were at when the key is on. Not as common now days. Key off gauge issues are rare, but if this is a gauge problem, I would tap on the top of the dash to see if maybe the gauge is just stuck. It does happen from time to time. Outside of that, I would drive the car for a 100 or so miles and see if the gauge eventually moves. If it doesn’t, you know you have a problem for sure.

If you determine the gauge is stuck, the next thing I would do is connect a scanner to see if the sending unit in the fuel tank is reading less than full. If it is, you know its a gauge problem and not the sending unit. Of course, if after 100 miles the sender still shows full on the scanner, it a sending unit problem.

This of course is the typical diagnosis when the key is on. This is a key off problem that may or may not be a problem with the key on. If the gauge is stuck full after 100 miles, it is time for a technician to determine what has failed. In this case, it sounds like it will be the gauge, which is often an integrated part of the instrument cluster. It will need to be looked at in person with a scanner to accurately diagnose.

For now, I recommend seeing if the gauge moves as the fuel is used in the tank, and if the gauge is just stuck in its extreme full position, driving around may jar it loose. Good luck. If you want a second opinion on this, reach out to a certified mechanic who can diagnose this issue accurately and replace your fuel gauge sender if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Gas line stays on F when car is turned off

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: How do I open the trunk using a key?

The trunk can easily be opened using a standard or mechanical key. To do so, insert the key into the trunk key hole, which is located next to the license plate. Once inserted, turn the key clockwise until the trunk...

Q: If one tie rod is bad on my 2005 Toyota Camry do I need to replace both of them.

Hello. Though it is good to have balance in your steering system and it is good practice to replace parts on both sides at the same time, you do not need to do that. You onlt need to replace the...

Q: When driving my car my transmission wont change speeds it goes into gear just fine though.

I believe your Altima has a CVT, a continuously variable transmission that often enters a "Safe Mode" when one of three things occurs. First, the incorrect transmission fluid is used; second, the transmission fluid level is low; or third (and...

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...
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...
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...