Question about Pontiac Grand Am
Check for a shorted wire at the tank sender unit as it is not allowing the variable resistor in the tank to regulate the voltage going through the gauge.. Or replace the tank sender unit.
Posted on Jul 29, 2013
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Posted on Jan 02, 2017
Usually if the gas gage does not work yes it is true it may be the sensor if it is electronicly controlled. the sncor will more than likley be in the tank. here is how to remove your gas tank.
Fuel pump assembly mounting
Posted on Apr 16, 2009
SOURCE: fuel gauge stuck on full
The fuel sending unit in the tank is broken. It acts as a variable resistor that tells your gauge what level the tank is at. When you remove the pos. lead it shows infinite ohms. and when you short it to ground it shows 0 ohms.
Posted on Jul 28, 2009
i suspect a broken wire between guage and sender unit in tank, but the sending unit could be bad,find the wire to the float guage in the tank and disconnect it, if fuel level does not change then then touch the wire to a ground, if the guage changes then the wire is ok and the unit is bad, if it does not change check wiring and guage for faults.
Posted on Jul 31, 2009
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