Q: Fuel gauge and tank not holding enough

asked by on November 20, 2016

Recently got this trailblazer from a buy here pay here near me was only aware of a problem with a wheel barring. Fuel gauge read empty when we took it from the lot went to put gas in it and could only get about $10 in then it wouldn't take anymore like it was full. Then realized the gas gauge still reads empty. So I dunno if it's full and that's why it only took $10 and just has a problem with the fuel gauge or could it have another problem that would cause the tank to not hold much gas? How should I deal with this and what can I do to know how much gas is in it so I don't run out? Any advice is appreciated thanks

My car has 182000 miles.
My car has an automatic transmission.

The most common problem is the fuel pump sending unit is bad in the fuel tank. The fuel gauge may also be bad in the dash. The best and quickest way to test the gauge is to disconnect the connection at the fuel pump and see if the fuel gauge moves when you turn on the key. If you see some gauge movement then the fuel pump and sender will need to be removed and the sending unit tested. Sometimes the sender gets caught when the fuel tank inside slosh panel is out of position and binds the sender holding it all the way empty. You would need to check all this when the fuel tank pump and sender is removed. If you need a mechanic like one from YourMechanic to come to you and remove the fuel pump and sender to test the sender operation, then just set an appointment for a mechanic to come to you.

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

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

I have a 2002 Silverado 1500 4x4 and I have to be pressing the gas to keep the engine from stalling.

Check the coil packs and see if they are producing the voltage needed to keep the engine running. If the voltage is too low, then the coil packs may need replaced. If you have an inline fuel filter, I suggest...

It cranks over like it wants to start but it won't.

Hi there. Under the passenger seat or in a panel on the dash there is an inertia switch that will cut off the fuel in the event there is an accident. Locate the inertia switch and see if its active....

Just put new alternater on but battery not charging

The alternator in your car charges your battery with the assistance from the voltage regulator which is something that regulates the amount of voltage being sent to the battery via the charging from the alternator. It's function is to not...

Related articles

The Best Used Cars to Buy That Can Be Towed Behind an RV
Summer Summer is a great time for a road trip, but often travelers like bringing all the conveniences of home along, in the form of an RV. Then they tow their car behind it – sometimes this practice is called...
What is MPGe: electric car fuel economy ratings explained
When When you tell your friends and family that you bought a new car, inevitably the first question you’ll get is, “What kind of gas mileage does it get?” The question assumes that you’ve purchased an internal combustion vehicle, not...
The Best Used Cars to Buy If You're a Carpenter
If If you're a carpenter, and working for someone else, the best used car is whatever you like that gets you to work on time and holds your tools – in short, practically any used car will do. If you...