Fuel Pump: Description and Operation

Fuel pump - Vehicles with 2.0L, 2.5L or 3.0L engine

NOTE: Federal market vehicle shown, non federal market vehicle similar.

Fuel Tank And Lines:

On all wheel drive vehicles, the fuel is pumped by a transfer pump and an electric turbine pump. Both pumps are fitted with fuel level sender units which are serviced separately. On two wheel drive vehicles, the fuel is pumped by a single electric turbine pump which is fitted with a separately serviced fuel level sender. The fuel pumps are fixed to the fuel tank by means of a locking ring and seal, which can only be accessed by removing the fuel tank.

On 2.0L vehicles the fuel tank is of a conventional design, a fuel pump module with mechanical pressure regulator and a local returnless circuit through the fuel filter is incorporated.

On 2.5L and 3.0L vehicles the fuel tank is of a saddle design, incorporating a fuel pump module and a transfer pump module. The transfer pump module (jet pump), located in the left-hand saddle, transfers low pressure fuel (high flow) to the right-hand saddle of the tank. The fuel pump module located in the right-hand saddle, supplies high pressure fuel (low flow) to the fuel pump on the engine.