The MGA With An Attitude
FUEL GAUGE CALIBRATION -- FG-102 FG-102 is a course in calibration of the MGA fuel gauge to make it read properly. I have gone through a considerable amount of tinkering to figure out the easiest way to field calibrate one of these instruments, and I would like to share some of the fun and success with a detailed review. If you're the impatient type who cares not for the whys and wherefores you can jump right to the conclusion by poking this link: Shortcut now. Or if you're the curious type who likes to learn new things, just keep on reading in sequence and enjoy the browsing.
![Fuel gauge test box, front view](pics/fg_325.jpg)
MGA fuel gauge test box, front view.
Serial Picture Tour For Calibrating The MGA Fuel Gauge:
Just follow the green arrows.
![](../space_t.gif)
![Inside rear view of test box details](pics/fg_322s.jpg)
Inside rear view of test box details. |
![Power on, emulating a full tank](pics/fg_315s.jpg)
Power on and emulating a full tank. |
![Switched to 3/4 tank.](pics/fg_316s.jpg)
Switched to 3/4 tank. |
![Switched to 1/2 tank.](pics/fg_317s.jpg)
Switched to 1/2 tank. |
![Switched to 1/4 tank.](pics/fg_318s.jpg)
Switched to 1/4 tank. |
![Switched to emulate empty tank.](pics/fg_319s.jpg)
Switched to emulate empty tank. |
![Switched to disconnect sender wire.](pics/fg_320s.jpg)
Switched to disconnect sender. |
![Front view, power off](pics/fg_321s.jpg)
View with power disconnected. |
![One resistor=full.](pics/fg_336_339.jpg)
One resistor=full |
![Two resistors=half.](pics/fg_337_340.jpg)
Two resistors=half |
![Short wired=empty.](pics/fg_338_341.jpg)
Short wired=empty |
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