I have the Classics and except for the needle moving around I'm not sure I can help you. The needle moving is due to the lack of the anti-slosh module. My gage will move during turns, braking, and acceleration as the gas gets sloshed in some direction but while driving on a level road it's OK. Beyond that, it's dead accurate. When it hits E it's empty! Not like a production car where E means you have about 30-40 miles to find a gas station. On mine, E means in about 2 minutes the engine's gonna quit!
The only thing I can think with your erratic reading is a bad connection, either signal or ground that's causing resistance changes.
The only thing I can think with your erratic reading is a bad connection, either signal or ground that's causing resistance changes.
