Service manual

90-898303 2-11

Final Filter

1996–2001 2.5L/1995–2001 3.0L

The final filter is located below the electric fuel pump in the vapor separator.

The filter collects debris and prevents them from flowing through the electric

pump and into the fuel rail and injectors.

1987–1995 2.4L/2.5L

The final filter is located above the electric fuel pump. The filter collects debris

flowing from the electric fuel pump to the fuel rail and can withstand blockage

up to 50% and still allow adequate fuel flow.

Electric Fuel Pump

1998–2001 2.5L/1995–2001 3.0L

The electric fuel pump runs at variable speeds to provide fuel in excess of

engine demands. The excess fuel is circulated through the fuel rail to the fuel

pressure regulator and back to the vapor separator.

1987–1997 2.4L & 2.5L

The electric fuel pump is continually providing fuel in excess of engine

demands. The excess fuel circulates through the fuel rail back to the vapor

separator. With the key in “run” position (engine off), the ECM signals the

pump to run for approximately 30 seconds then shut off. With the key in run

position (engine running), the ECM determines pump speed (2 speeds)

depending on RPM. During low speed operation pump is at low speed.

Induction Manifold

The induction manifold is a common plenum chamber for accurate pressure

measurement. It contains 4 throttle shutters on 2 throttle shafts. The shutter

opening (idle air opening) can be adjusted during EFI set-up procedure. The

manifold contains the fuel rail, injectors, throttle position sensor and air

temperature sensor. A fuel rail pressure port is located on the fuel pressure

regulator.

Notes

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