2002 Lexus SC 430 Logo

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Anonymous Posted on Nov 14, 2012

Why does my 2002 SC430 gas gauge needle not work when tank is full?

Filled gas tank and gas gauge almost still reads empty and digital readout still shows 5 miles left till needing to refill tank.

1 Answer

richie46

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  • Lexus Master 12,962 Answers
  • Posted on Sep 15, 2015
richie46
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Joined: Nov 21, 2009
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The sending unit in gas tank is broken - hence the wrong readings of how much gas is in the tank. Replace unit.

4 Related Answers

Anonymous

  • 103 Answers
  • Posted on Jan 12, 2009

SOURCE: is IS250 bad on gas?

according to Kelly Blue Book your gas milage is spot on. Be careful with K&N air filters, they are a performance part and they may affect any warrenty you might have. Plus I have seen them give Mass Airflow Sensors problems.

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Anonymous

  • 205 Answers
  • Posted on Nov 12, 2010

SOURCE: will a 2006 sc430 headlight work on a 2002 sc430

Find out if the resistencce are the same and the connector.

Anonymous

  • 16 Answers
  • Posted on Jan 09, 2011

SOURCE: I have filled up my

it could be a problem with your fuel sending unit it could be bad or stuck in the down(empty)position... that is the most likely problem but if it is a fuse it would be listed under gauge it is in the drivers compartment fuse box it will be a 10 amp fuse

Anonymous

  • 273 Answers
  • Posted on May 18, 2011

SOURCE: 1991 Lexus LS 400 fuel gauge reads empty, even

your float inside your gas tank is stuck. Or broken.

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Why would Fuel gauge fluctuate erratically then shake at blinding speed?

Bad sending unit, bad ground, bad gauge, I have seen sending unit go bad they will work part way.
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The gas gauge on my 2001 Nissan Altima shows full when filled up, but only tets to 1/2 full when it is near empty. Suggestions?

Either the fuel tank sender in the tank is bad and needs replacement, or the fuel gauge is faulty. I would bet the one in the tank is probably bad, because that's usually the case. Find the connection at the fuel tank, disconnect it and use a VOM to get a resistance reading while the tank is empty and reading 1/2. It should match the specs.

If you need further help, reach me via phone at https://www.6ya.com/expert/daniel_4061c3d97c12c4c7

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Fuel gauge registers full when filled with gas....drive 20mi and then drops to zero...still gas in the tank

The sender unit in the tank is the most likely cause. To test the panel unit, remove the wire from the fuel tank unit and gound it. The panel gauge needle should move up full scale to hot. Remove the wire from the ground and the gauge should return to empty. If this test is ok, the tank unit needs to be replaced.
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Replace the fuel sensor / sending unit, it is inside the gas tank, it is a lot of work to drop the gas tank, I have done it on other cars... If you want to do it make sure the tank is almost empty it is very heavy with all that gas inside make sure there is no open flames or cigarretes close
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Gas gage constantly says full when it's not!

Unfortunately this is most likely the fuel pump module, which includes the fuel level sensor also. This should be diagnosed more thoroughly with a scanner, a good scanner will be able to check instrument cluster separately to confirm the gage is working right,and check for trouble codes that may not light any warning lamps. Hope this helps. Rate me please.P.S. Dont use that fuel station any more.
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