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fuel pressure.
*
On 2.2L and 2.4L Cavalier and Sunfire, loosen fuel
filler cap to relieve tank pressure (do not tighten
at this time). Disconnect fuel pump connector. Start
and run engine until it stalls. Crank starter for 3
seconds to remove remaining fuel from fuel lines. Turn
ignition off. Reconnect fuel pump connector. Disconnect
negative battery cable to avoid possible fuel discharge
in accidental attempt to start engine.
*
On 2.2L Saturn, connect scan tool to Data Link Connector
(DLC). Start engine. Using scan tool special tests
function, select PCM/EC, and then select fuel delivery.
Select FUEL PUMP and command fuel pump off. Engine
will stall in 3-5 seconds. Turn ignition off.
CNG FUEL MODULE ASSEMBLY
NOTE:
Module is located in left front corner of engine compartment.
Removal (2.2L - Cavalier)
1) Relieve fuel system pressure. See
FUEL SYSTEM PRESSURE RELEASE (CNG). Disconnect negative battery cable.
Remove throttle cables from retaining clip. Remove gas distribution
adapter. Disconnect fuel inlet line from Low Pressure Lock-Off (LPL)
solenoid. See Fig. 13.
2) Disconnect wiring harness connectors. Remove CNG fuel
module assembly bracket nuts and bolts. To install, reverse removal
procedure. Tighten all fasteners to specification. See
TORQUE SPECIFICATIONS.
FUEL PUMP
NOTE:
When installing fuel sending unit assembly, DO NOT fold or
twist strainer. This will restrict fuel flow.
Removal & Installation (Except 1.3L, 1.8L, 3.0L & 4.6L)
1) Fuel pump is located in fuel tank and is integral with
fuel sending unit assembly. Fuel pump must be replaced with fuel
sending unit as an assembly. Relieve fuel system pressure. See
CRANKSHAFT (24X) POSITION SENSOR (DIS). Disconnect negative battery
cable.
2) Raise and support vehicle. Disconnect fuel lines and
harness connections at fuel tank. Remove fuel tank. Remove fuel
sending unit assembly retaining ring or cam lock ring. Lift fuel
sending unit assembly from fuel tank. To install, reverse removal
procedure using NEW "O" ring and gasket.
Removal & Installation (1.3L)
1) Fuel pump is located in fuel tank and is integral with
fuel sending unit assembly. Remove fuel tank from vehicle. Disconnect
harness connector from fuel sending unit assembly. Remove clamp and
disconnect fuel vapor hose from fuel vapor pipe.
2) Disconnect quick-connect fuel feed and fuel return lines.
Remove 6 fuel sending unit hold-down bolts and remove fuel sending
unit assembly from fuel tank. Disconnect fuel level sensor harness
connector. Depress fuel level sensor retaining tab and slide sensor
down to remove from fuel sending unit assembly.
3) Using a screwdriver, release 3 snap catches and remove
lower assembly end cap. Remove fuel pump cushion. Disconnect harness
connectors from fuel pump. Remove fuel pump from fuel sending unit
assembly.
4) To install, reverse removal procedure. Use NEW gasket on
fuel sending unit assembly. Tighten fuel sending unit assembly hold-
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