Gas gage not working

[missimace]

I have had this problem with my 2001 intrigue for a long time. The gas gage simply does not work. It fluctuates and reads what ever it feels like...Any suggestions?

[panzer dragoon]

The fuel level sensor changes resistance based on fuel level. The fuel level sensor has a signal circuit (5V) and a ground circuit. The PCM applies a voltage of about 5 volts on the signal circuit to the sensor. The PCM monitors changes in this voltage caused by changes in the resistance of the sensor to determine the fuel level.


The normal resistance values of the sensor are as follows:
40 ohm plus or minus 2.5 ohms = empty
248.5 ohms plus or minus 3.3 ohms = full
This diagnostic table requires the following special tools: J 33431-C Signal Generator/Instrument Panel Tester

Before replacing the sensor, check for the possibility of foreign material in the fuel tank that may inhibit the correct float arm movement, including ice. Check for the float arm contacting other components on the fuel pump and sender assembly.

Clean the +5V and ground connection for the fuel sensor without blowing yourself up (gas). Forget the cleaning, just make sure you have 5V and a good ground at the other end. If you do then test the sensor resistance.