Symptoms of a Bad or Failing Fuel Gauge Sender

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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
2013 Nissan NV3500 $241 $115.17 $126.00 21% $308.67
2012 Subaru Legacy $184 $106.66 $77.00 18% $224.91
2010 Mazda B2300 $264 $145.02 $119.00 19% $327.77
2007 Cadillac CTS $981 $659.38 $322.00 14% $1153.88
2003 Lincoln Navigator $1079 $890.38 $189.00 8% $1180.63
2011 Porsche Boxster $529 $410.49 $119.00 10% $593.24
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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.

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Recent Fuel Gauge Sender Replacement reviews

Excellent Rating


YourMechanic Fuel Gauge Sender Replacement Service

Average Rating

4.8/5

Number of Reviews

40

Rating Summary
38
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1
38
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Patrick

8 years of experience
83 reviews
Patrick
8 years of experience
Very helpful and took time to explain my options.
1994 CHEVROLET K1500 - FUEL GAUGE SENDER - SCOTTSDALE, ARIZONA

Alex

19 years of experience
82 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

Patrick

30 years of experience
865 reviews
Patrick
30 years of experience
Was right on time, I had to have the fuel guage sensor replaced witch involves lowering the fuel tank, THE TANK WAS FULL, Patrick went right to work draining the fuel and did the job in two hours and put the fuel back in the tank. Awesome work!
2007 NISSAN XTERRA - FUEL GAUGE SENDER - AUSTIN, TEXAS

Robert

29 years of experience
179 reviews
Robert
29 years of experience
I find Robert Panaggio an excellent asset to the YourMechanic organization. He’s knowledgeable and very skilled in providing automotive service to customers who’d rather sublet the job to folks who knows how to do it. Today, I had the pleasure of knowing how Robert approaches the job at hand. He removed my Subaru Forester’s fuel sender unit and replaced it with a new one to my great satisfaction. But, to do it is not just a simple R/R, he had to pull out the rear bench seat and other accessories on the way, to just locate its location prior to the actual R/R task. Robert is prompt in reporting to work and he made me feel at ease and comfortable that I am in good hands. Overall, my experience with your organization in terms of quote request, pricing, appointment setting, and job follow through is second to none. I would definitely recommend your company to my friends and to whomever not familiar with YourMechanic.
1999 SUBARU FORESTER - FUEL GAUGE SENDER - SAN JOSE, CALIFORNIA

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