Autometer Fuel Guage Problem

[Alec Jones]

I am in the process of building a 1969 Dart ...i have installed a custom Dash with Auto Meter American Muscle Gauges, All gauges work except for the Fuel gauge only reads about an 1/8th of a tank when i know there is at least 1/2 a tank. I tested the gauge with a 10 OHM resistor and it goes to full....I have grounded the tank AND sending unit and taken a ohm reading at the sending unit to ground and it was 39-40.
I called Auto meter Tech support and was told that the new Gauge technology use a non linear signal whereas the sending unit is a linear signal and there is no known fix for this problem...anyone run across this problem?....fix?
just a little more info...new tank ...new OER sending unit...new Painless wiring ....

 

[Professor Fate]

TechnoVersions - MeterMatch for Analog Gauge Correction

 

[Dana67Dart]

39-40.

If you look at 9 gallons you see your magical 39 to 40 ohms on the aftermarket senders.

BUT the OEM sender and gauge want about 25 to show 1/2 It looks like your Autometer is tuned to the OEM sender

There is a meter match which has been reported to work wonders

 

[Alec Jones]

TechnoVersions - MeterMatch for Analog Gauge Correction

Thank You for the help ...actually found that Autometer makes a bridge unit that converts the non linear signal