Liberty gas gauge

[gpenick]

We have a 2005 Liberty and when we fill the gas tank up within a few minutes the gas gauge goes all the way to empty and the check engine light comes on. After a day or two of driving the gauge will go back up but the light stays on. Any ideas on what could be wrong?

 

[SteelHeadz]

It could be a faulty fuel level unit.

Perform the Instrument Cluster Self Test.
Depress and hold the Trip Odometer reset button while turning the ignition on.​

NOTE: The Instrument Cluster Self Test can also be performed using the
DRBIII​

​

​

​

​

t.​

Observe the Fuel Gauge calibration points during the Self Test.
The Fuel Gauge indicator needle should pause at the following positions:
Off: Empty Stop below​

​

​

​

9E9​

Calibration Point 1:​

​

​

​

91/49​

Calibration Point 2:​

​

​

​

91/29​

Calibration Point 3:​

​

​

​

9F9​

Calibration Point 4:​

​

​

​

93/49​

Calibration Point 5:​

​

​

​

91/29​

Calibration Point 6:​

​

​

​

91/49​

Calibration Point 7:​

​

​

​

9E9​

Did the Fuel Gauge needle pause at the correct calibration points?