how does the gas guage work?

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ELLEN GREEN
  • MEMBER
  • 1 POST
guage reads empty even tho there is @ 1/2 tank. The guage fluctuates up and down. it is unreliable. i must keep track of purchases and milage to determine when to buy gas. this works most of the time ecxept twice when i ran out of gas. Help.
Oct 31, 2011 at 9:53 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
The gauge receives a signal from the body control moduld, which receives it from the sending unit in the fuel tank. Chances are the sending unit is faulty in the tank. It is part of the fuel pump.
Oct 31, 2011 at 11:03 AM
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