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My RS250 fuel gauge may be faulty, one minute the redlight (low fuel) comes on then next minute it goes off and the needle is showing a quarter of a tank, then it drops back again - any suggestions?

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

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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.

Posted on Aug 16, 2008

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  • 958 Answers

SOURCE: fuel gauge moves back and forth from full to empty

you have a bad sending unit inside your tank.
the resistance of the potentiometer inside is broke on the half tank part.

you have to replace it.

tnx 4 using fixya.

drcool

Posted on Oct 05, 2008

  • 91 Answers

SOURCE: 2001 Buick Century fuel gauge

fuel sending unit is faulty needs replaced unfortunatly you will be forced to buy the entire fuel pump (module). they are not cheap.

Posted on Apr 24, 2009

  • 169 Answers

SOURCE: 2002 pontiac montana fuel gauge

It needs a tank meter I'ts in the fuel tank

Posted on Aug 29, 2009

  • 1146 Answers

SOURCE: The gas gauge on my 2002 chevy venture is not

Hi:
Your tank sending unit is bad. Unfortunately, it is part of the fuel pump assembly, and the part costs around $400, give or take. plus installation labor. It is an all too common problem on GM vehicles, as I have had to change it on my last 2 GMs. If you do an internet search you will find plenty of others in the same boat!

Posted on Apr 23, 2010

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