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Fuel Gauge Sending Unit Resistances: Notes

240 SERIES FUEL GAUGE SENDING UNIT RESISTANCE

Float Position Ohms
Primary Tank
7.5" (191 mm) 35-45
3.3" (84 mm) 84-112
.60" (15 mm) 197-250
0" (0 mm) 234-333
740, 760 & 780 SERIES FUEL GAUGE SENDING UNIT RESISTANCE

Float Position Ohms
Primary Tank
8.4" (213 mm) 34-38
5.6" (142 mm) 61-69
3.6" (91 mm) 86-98
1.8" (46 mm) 130-146
1.2" (30 mm) 156-176
0" (0 mm) 281-311
Secondary Tank
Top 1
Bottom 18
NOTE: Secondary fuel tank sending unit is connected in series with primary fuel tank sending unit. Add primary tank sending unit resistance to secondary tank sending unit resistance to obtain total circuit resistance.
Fig 1: Checking Fuel Gauge Sending Unit Resistance
G68199Courtesy of VOLVO CARS OF NORTH AMERICA.