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Posted on Dec 22, 2012
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Fuel gage showing half a tank but trip computer only registering 60 miles left

My car is a saab 93 vector 1.8t no matter how much fuel the gauge reads the trip computer always has low miles left till empty

1 Answer

Sean Piquet

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  • Saab Master 1,867 Answers
  • Posted on Dec 22, 2012
Sean  Piquet
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Joined: May 16, 2009
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Its very simple. If the gauge is showing half full then fill the tank and see how much fuel it takes. If the amount you add is approximately 50 percent of the fuel tank capacity then you know the fuel gauge is accurate . In that case the computer is giving an inaccurate reading and should be ignored. All you need is an accurate fuel gauge - it does not matter a row of beans what the computer says if the fuel gauge is reading correctly.

5 Related Answers

A

Anonymous

  • Posted on Aug 16, 2008

SOURCE: fuel gauge problem

The nature of the gauge is that it should behave with a linear taper between full and empty. If it works when full but then malfunctions as the level drops, the variable resistor in the sending unit which is housed along with the fuel pump in the gas tank is almost certainly at fault. The sending unit will have to be replaced to fix the problem. Expect this to be an expensive endeavor.

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Greg Mills

  • 497 Answers
  • Posted on Aug 27, 2009

SOURCE: 2002 Chevy Suburban: Fuel gauge reads empty, tank is half full

Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.

Anonymous

  • 1 Answer
  • Posted on May 28, 2010

SOURCE: fuel tank gauge is not registering properly. after...

This is a very common problem with the Snate Fe. It is a scam so they can charge you $350 to replace a defective sensor. They know the sensors are defective and don't last long but it is a money maker so they have not done anything about it.

Anonymous

  • 1 Answer
  • Posted on Jun 16, 2010

SOURCE: 2005 kia sorento Fuel Gauge says empty with 1/2 tank of gas.

Fuel sensor is not working well. Just changed mine today for the same problem.

Anonymous

  • 10319 Answers
  • Posted on Aug 30, 2010

SOURCE: fuel gage is always full even when the tank is

replace the sending unit in the fuel tank if the wires are not cut off

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