Symptoms of a Bad or Failing Fuel Gauge Sender

Our certified mechanics come to you · Backed by our 12-month, 12,000-mile warranty · Get a fair and transparent estimate upfront

GET A QUOTE Backed by 12-month, 12,000-mile guarantee
Red-stars EXCELLENT RATING ON

Cost of Replacing a Bad or Failing Fuel Gauge Sender

If your fuel gauge behaves erratically or is stuck on full or empty, you may need to replace the fuel gauge sender. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Fuel Gauge Sender Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2011 Nissan Sentra $184 $79.04 $105.00 23% $240.29
2004 Dodge Ram 3500 $268 $120.96 $147.00 22% $346.71
2005 Toyota Tundra $259 $132.81 $126.00 20% $326.31
2006 Cadillac XLR $1687 $860.58 $826.00 20% $2129.08
2003 Lexus GS300 $244 $174.25 $70.00 13% $281.75
2005 Mercedes-Benz CL55 AMG $329 $237.51 $91.00 12% $377.26
GET A QUOTE FOR YOUR CAR

How to Diagnose a Bad or Failing Fuel Gauge Sender?

fuel gauge sender

The fuel gauge sender is a component that is found in the gas tank of most road going vehicles. The fuel gauge sender, also commonly referred to as the fuel sending unit, is the component responsible for sending the signal that operates the fuel level gauge in the instrument cluster. The fuel sending unit is made up of an arm, float, and a resistor that changes according the position of the float. The sender float is designed to float on the surface of the fuel inside of the tank. As the level drops, the position of the arm and float will shift and move a resistor which controls the display on the gauge. When the fuel sending unit has an issue it can cause the vehicle to experience issues with the fuel gauge, which can put the vehicle at risk of running out of fuel. Usually a bad or failing fuel gauge sender will produce a few symptoms that can alert the driver of a potential issue.

1. Fuel gauge behaves erratically

One of the first symptoms of a problem with the fuel gauge sender is a fuel gauge that behaves erratically. A faulty fuel gauge sender may cause the gauge to suddenly change positions, or give an inaccurate reading. The gauge may appear to be at three quarters, and then only a few minutes later will change to half full, or vice versa the gauge may appear to be full, only to have the gauge climb higher a short while later.

2. Fuel gauge stuck on empty

Another common symptom of a faulty fuel gauge sender is a gauge that is stuck on empty. If the float somehow breaks or becomes separated from the arm it may cause the fuel gauge to malfunction and become stuck on empty. A faulty resistor can also cause the gauge to read empty.

3. Fuel gauge stuck on full

Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. A faulty fuel gauge resistor can send a bad signal to the instrument cluster which can cause the gauge to permanently read full. This is an issue, as the driver needs to know the accurate fuel level of the vehicle as to not run out of fuel.

The fuel sending unit is not a routinely serviced component, usually only serviced when it, or the fuel pump fails, however it does play an important role to the proper operation of the vehicle. If you fuel gauge is displaying any of the symptoms, or you suspect that there may be an issue with this unit, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the fuel gage sender should be replaced.

fuel system

Fast and easy Fuel Gauge Sender Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
Backed by 12-month, 12,000-mile guarantee

Recent Fuel Gauge Sender Replacement reviews

Excellent Rating


YourMechanic Fuel Gauge Sender Replacement Service

Average Rating

4.6/5

Number of Reviews

31

Rating Summary
29
1
0
0
1
29
1
0
0
1

Jason

14 years of experience
426 reviews
Jason
14 years of experience
Very personable...knew what he was doing, confinatelly...found other problems, and fixed them...All I had to offer was a carport, and it rained incessantly, with no complaints. I would recommend Jason to ALL my friends. He actually fixed more than I expected and saved me beaucoup dollars over my usual Shop.
2001 CADILLAC ELDORADO - FUEL GAUGE SENDER REPLACEMENT - VACAVILLE, CALIFORNIA

Rusty

20 years of experience
242 reviews
Rusty
20 years of experience
This was the first time i used YourMechanic.com. I received OUTSTANDING service. Rusty is professional, explains what he is doing, and inspects the car for other issues. I appreciated knowing what items need to be addressed in the future (brake pads, power steering pump leak, and a couple of other items). He was on time and communicated via text to clarify the work I needed done and the symptoms of the problem prior to beginning the work. He fixed the problem (fuel oil sender) and replaced the serpentine belt. The price was very reasonable when compared to a shop or the dealer. I will definitely call on Rusty again for those jobs that I cannot or do not want to do myself. Thank you Rusty.
2008 HYUNDAI SANTA FE - FUEL GAUGE SENDER - MANSFIELD, TEXAS

Alex

19 years of experience
79 reviews
Alex
19 years of experience
Alex was professional and on time. Was knowledgeable and had experience with the issue I was having with my vehicle. Finished work in a timely manner and best of all, the problem was fixed. Thank you, wonderful job!
2011 DODGE CHARGER - FUEL GAUGE SENDER - GILBERT, ARIZONA

Chris

19 years of experience
1126 reviews
Chris
19 years of experience
Awesome! Great service and great constant communication. He knew what he was doing and gave me some great advice on other car items.
2005 INFINITI QX56 - FUEL GAUGE SENDER REPLACEMENT - IRVINE, CALIFORNIA

More related articles

How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...

Related questions

Q: Car is having problems starting in morning

You will need to have the fuel pressure checked with a gauge when the vehicle is first started to see if there is pressure at the injectors or the pressure drops off after key is off. This is an indication...

Q: The car cannot start right away when the engine's cold

It sounds like you are on the right track with thinking it's a fuel-related issue with your 2000 Audi A8 Quattro. Your Audi may not be getting enough fuel for a cold start due to incorrect sensor data. Or it...

Q: I dropped a plastic object in my gas tank. It's about 25 cm long. What will happen and what should I do???

Hi there. The effect that this object will have on your vehicle depends on its size. If it is not flat and somewhat irregular, then you should be fine if you leave it in there as it should not interfere...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com