Thanks you guys!! That's what I read in some of the other posts about this problem. I don't mind sending the old sending unit in for repairs but would really not like to remove the gauge (removing dash again!!). But I do know that the gauge should be calibrated with the sending unit...can't they set up the old sending unit properly without the gauge?? They should know what a factory gauge needs when it comes to the ohms??
There is a company out there that rebuilds the old non-linear sending units. Give them a shot first. I went thru the same problem, cost me dearly wasting $ on a replacement that was linear. Finally, finding an OEM one. I agree with 67 Dart. Tri Starr LLC 1452 State Rte 89 Seneca Falls, NY 13148 Web: Rebuilt Fuel Sending Unit Specialist