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Fuel Gauge Test

Connect Rotunda Gauge System Tester (021-00055) between Yellow wire at fuel tank sending unit connector and ground. Set tester to resistances shown in FUEL GAUGE TEST table. Observe gauge at each setting for 2 minutes. Replace gauge if indications are not as specified. See Fig 1 .

FUEL GAUGE TEST

Gauge Needle Position (1) Resistance Setting Ohms
Full Position (Up) 6.5
Half-Full Position (Middle) About 32.5
Empty Position (Down) 95
(1) Allowable error is twice width of needle.
Fig 1: Testing Fuel Gauge
G94H46620Courtesy of FORD MOTOR CO.