Dodge Caliber. Manual — part 1133
SPECIAL TOOLS
FUEL
Pressure Gauge Assembly C–4799–B
Fuel Pressure Test Adapter 6539
9318 LOCK RING TOOL
Spanner Wrench 9340
Fuel Line Adapter 1/4
O2S (Oxygen Sensor) Remover/Installer—C-4907
O2S (Oxygen Sensor) Remover/Installer - 8439
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FUEL DELIVERY
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FUEL FILTER
DESCRIPTION
The fuel filter mounts inside the fuel pump module and is a non-serviceable part.
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FUEL DELIVERY
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FUEL LINES
DESCRIPTION - FUEL LINES/HOSES AND CLAMPS
Also refer to Quick-Connect Fittings.
WARNING: The fuel system is under a constant pressure (even with the engine off). Before servicing any
fuel system hoses, fittings or lines, the fuel system pressure must be released. Refer to the fuel system
pressure release procedure in this group. This may result in personal injury or death.
The lines/tubes/hoses used on fuel injected vehicles are of a special construction. This is due to the higher fuel
pressures and the possibility of contaminated fuel in this system. If it is necessary to replace these lines/tubes/
hoses, use new original equipment lines/tubes/hoses.
If equipped: The hose clamps used to secure rubber hoses on vehicles are of a special rolled edge construction.
This construction is used to prevent the edge of the clamp from cutting into the hose. Only these rolled edge type
clamps may be used in this system. All other types of clamps may cut into the hoses and cause leaks.
Use new original equipment type hose clamps.
STANDARD PROCEDURE - HOSES AND CLAMP
Inspect all hose connections (clamps and quick connect fittings) for completeness and leaks. Replace cracked,
scuffed, or swelled hoses. Replace hoses that rub against other vehicle components or show sign of wear.
Fuel injected vehicles use specially constructed hoses. When replacing hoses, only use hoses marked EFM/EFI.
When installing hoses, ensure that they are routed away from contact with other vehicle components that could rub
against them and cause failure. Avoid contact with clamps or other components that cause abrasions or scuffing.
Ensure that rubber hoses are properly routed and avoid heat sources.
The hose clamps have rolled edges to prevent the clamp from cutting into the hose. Only use clamps that are
original equipment or equivalent. Other types of clamps may cut into the hoses and cause high pressure fuel leaks.
Tighten hose clamps to 1 N·m (9 in. lbs.) torque.
Inspect all hose connections such as clamps, couplings and fittings to make sure they are secure and leaks are not
present. The component should be replaced immediately if there is any evidence of degradation that could result in
failure.
Never attempt to repair a plastic fuel line/tube. Replace as necessary.
Avoid contact of any fuel tubes/hoses with other vehicle components that could cause abrasions or scuffing. Be sure
that the plastic fuel lines/tubes are properly routed to prevent pinching and to avoid heat sources.
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FUEL DELIVERY
14 - 7
FUEL PUMP
DESCRIPTION
The electric fuel pump is located in and is part of the fuel pump module. It is a positive displacement, gerotor type,
immersible pump with a permanent magnet electric motor. The fuel pump module is suspended in fuel in the fuel
tank.
OPERATION
The pump draws fuel through a strainer and pushes it through the motor to the outlet. The pump contains a check
valve. The valve, in the pump outlet, maintains pump pressure during engine off conditions, for a short while. It is
normal for fuel pressure to drop to zero after cooldown. The fuel pump relay provides voltage to the fuel pump. The
fuel pump has a maximum deadheaded pressure output of approximately 880 kPa (130 psi). The regulator adjusts
fuel system pressure to approximately 400 kpa ±34 kpa (58 psi ± 5 psi).
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FUEL DELIVERY
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