I have the same problem, and have been told by my tech that if the grounds and wire connections on the back of the guage are all perfectly clean and tight and making good connection, and the sending unit is good, then it is the guage unit in the dash that is failing. He said that given the costs of guages, unless I just couldn't stand it, to live with the problem, especially as the reserve light and top half of the guage are still accurate. I have taken his advice, and use the trip odometer for a confirming device - when it gets over 250 miles on it, I fill the tank regardless of what the guage says. Sort of a Digital gas guage!
[Edited by JCE on 02-17-2001 at 02:22 AM]
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E