1999 Pontiac Firebird gas gauge

1999 PONTIAC FIREBIRD
94,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JKBAGNAL
  • MEMBER
  • 2 POSTS
The gas gauge will not read correctly, it's stuck at the full mark. I'm not sure how to fix it so I can know how much gas I have.
Jul 29, 2008 at 9:07 AM
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MMPRINCE4000
  • ✓ASE Certified Mechanic
  • 8,548 POSTS
  • ASE Certified Mechanic
You can disconnect the fuel sender harness from the tank and measure resistance from the wires going into tank. GM cars are generally 0-90ohms, 0 being empty and 90 being full. If you get 90ohms, then the sender is bad. If less, then the gauge in the IP is bad.
Jul 29, 2008 at 11:51 AM
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