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Home >> Ford >> 1990 >> Bronco 4.9 Y, Standard, M5OD-R2 >> Repair and Diagnosis >> Electrical >> Gauges >> Fuel Selector Valves >> Description

Fuel Selector Valves: Description

Two fuel selector valves are used. Gasoline engine models use a mechanically-activated dual function reservoir. The dual reservoir operates on dual tank vehicles. Diesel equipped vehicles use a 6-port fuel selector valve.

The dual function reservoir combine reservoir/filter function with tank selector valve function. The dual function reservoir system uses 3 fuel pumps: 2 low pressure pumps in tank and one external high pressure pump. The 6-port diesel fuel selector valve has no internal pump or filter. The selector valve is powered by a small electric motor which opens and closes the valve ports.

Fig 1: Exploded View of Dual Function Reservoir
G71091Courtesy of FORD MOTOR CO.
Fig 2: Dual Function Reservoir Fuel Flow
G117096Courtesy of FORD MOTOR CO.