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Fuel gauge stuck on full

Tiny
KITTYKAT84
  • MEMBER
  • 1999 CHEVROLET CAVALIER
  • 2.2L
  • AUTOMATIC
  • 2,000,000 MILES
So, my fuel gauge is stuck on full and will not change no matter what, so I have to keep resetting my Tripp meter so that every 500km. I then know it needs to be refilled so that I can be sure I don’t run out of fuel. My brother said he can fix it but was just wondering if it’s possibly just the floater arm or if the float has fallen off, so the arm has no balance.
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Wednesday, March 30th, 2022 AT 12:35 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
We need to start with checking the voltage from the sender to find out if the gauge is just displaying what it is told or if the cluster is the issue.

Here is a guide that will help with checking the voltage on this circuit from the sender:

https://www.2carpros.com/articles/how-to-check-wiring

I am attaching the info below, but I suspect you are correct that the float in the tank is stuck up (as the tank shows full) or the sensor has failed.

So, let's run through this info and we can go from there.

Thanks
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Thursday, March 31st, 2022 AT 4:29 PM

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