<<<<<<<<<<<Where is the fuel sending unit at? When i fill up my tank it says I only have a 3/4 of a tank, so I have to do somthing to the sending unit. and suggestions? Thanks, Kevin Pacheco 71 IMPERIAL>>>>>>>>> Before repairing or replacing the tank sending unit, clean and tighten all the connections in the circuit. Any iffy connections can introduce enough resistance into the circuit to change the calibration. The most likely connections to be cruddy are the one at the tank sender or the connector plug(s) in the wiring to the rear of the car. regards Michael Roger and Michael in San Diego 67 Crown Convertible "Moby" 73 LeBaron Coupe "La Bomba Negra" 56 Sedan