'01 3.4 996 Fuel Gauge Problem

[jockmog]

The fuel gauge on my '01, 3.4 Coupe has started to read full all of the time even after driving for more than 200 miles. Any suggestions as to why this might be?
I have just had the front to rear A/C pipe replaced at an OPC and wonder if something has been disturbed. On filling the tank today I noticed that there seemed to be an abnormal amount of vacuum when I undid the fuel cap.
All suggestions gratefully received, thanks.

[BYprodriver]

My sending unit failed & I ran out of gas while the gauge showed 3/4 full. Had it towed 100 miles to a dealer where they replaced it. That one failed within month's. Since a dealer installed it they replaced it again free of charge.

[JFP in PA]

Originally Posted by jockmog

The fuel gauge on my '01, 3.4 Coupe has started to read full all of the time even after driving for more than 200 miles. Any suggestions as to why this might be?
I have just had the front to rear A/C pipe replaced at an OPC and wonder if something has been disturbed. On filling the tank today I noticed that there seemed to be an abnormal amount of vacuum when I undid the fuel cap.
All suggestions gratefully received, thanks.

The 996 has a fuel system calibration procedure, yours may need to be reset.