fuel type FORD MUSTANG 2003 Owner's Guide

DESCRIPTION AND OPERATION
Intake Air Distribution and Filtering —
Supercharger,
Charge Air Cooler
The supercharger (SC) is a positive displacement pump. Its purpose is to supply an excess volume of
intake air to the engine by increasing air pressure and density in the intake manifold. The supercharger
is matched to the engine by its displacement and belt ratio, and can provide excess airflow at any
engine speed.
NOTE: The supercharger is repaired only as an assembly. Disassembly of the supercharger unit may
void the warranty.
NOTE: The supercharger is not a bolt- on option. It is part of an integrated engine system. Many
components of the supercharged engine are not interchangeable with similar parts from a non-
supercharged engine.
The supercharger contains two three- lobed rotors. The helical shape and specialized porting provide a
smooth discharge flow and low level of noise during operation. The rotors are supported by ball
bearings in front and needle bearings at the rear. The drive gears are pressed into place, therefore the
supercharger is installed new as a unit, and is not repairable.
The supercharger system is a blow- through type with the fuel injected directly into the intake ports. The
supercharger is belt driven off the crankshaft through an idler pulley. The throttle body controls the
amount of intake air to the supercharger through the intake plenum. Air from the supercharger is
routed through the charge air cooler (CAC), then to the intake manifold. The resulting denser air
charge in the combustion chamber provides for a higher power output of the engine over a non-
supercharged engine of the same displacement.
NOTE: It is not possible to increase manifold pressure or engine power output by altering the bypass
valve or the actuator.
At partial- throttle opening or when vacuum is present in the intake system, a vacuum- controlled
bypass valve reroutes some discharged air from the supercharger back through the intake plenum.
This prevents the supercharger from cavitating, causing reduced performance, increased
temperatures, and poor fuel economy.
The supercharger has a self- contained oiling system that does not require a fluid change for the life of
the vehicle. However, at every 30,000 mile interval, the supercharger fluid level should be checked.
The vehicle should be parked on a level surface, the engine cool, and not running. To check the oil,
remove the Allen head plug located at the front of the supercharger. The oil level should be at the
bottom of the fill plug threads when cold. If the fluid level is low, add Synthetic Supercharger Fluid
E9SZ- 19577- A or equivalent meeting Ford specification ESE-M99C115–A
Supercharged vehicles are equipped with a charge air cooler (CAC). The CAC cools the pressurized
air from the supercharger, increasing the air density, which improves combustion efficiency, engine
horsepower and torque. SECTION 303-
12: Intake Air Distribution and Filtering 2003 Mustang Workshop Manual Klj . 1 ba
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REMOVAL AND INSTALLATION
Evaporative Emission Canister
Removal and Installation
1. WARNING: The evaporative emission system contains fuel vapor and condensed
fuel vapor. Although not in large quantities, it still presents the danger of explosion or
fire. Disconnect the battery ground cable from the battery to minimize the possibility of
an electrical spark occurring, possibly causing a fire or explosion if fuel vapor or liquid
fuel is present in the area. Failure to follow these instructions may result in personal
injury.
Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
3. Remove the left rear wheel. For additional information, refer to Section 204 - 04 .
4. WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or around any fuel- related component. Highly flammable mixtures are always
present and may be ignited. Failure to follow these instructions may result in personal
injury.
Disconnect the canister vent solenoid hose assembly.
5. Disconnect the connector.
6. Disconnect the evaporative emission (EVAP) canister purge outlet tube.
SECTION 303-
13: Evaporative Emissions 2003 Mustang Workshop Manual Klj . 1 ba
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REMOVAL AND INSTALLATION
Evaporative Emission Canister Purge Valve
Removal and Installation
1. WARNING: The evaporative emission system contains fuel vapor and condensed
fuel vapor. Although not in large quantities, it still presents the danger of explosion or
fire. Disconnect the battery ground cable from the battery to minimize the possibility of
an electrical spark occurring, possibly causing a fire or explosion if fuel vapor or fuel
liquid is present in the area. Failure to follow these instructions may result in personal
injury.
Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
3. Remove the RH front wheel. For additional information, refer to Section 204 - 04 .
4. Remove the right front splash shield. 1. Remove the three screws.
2. Remove the five pin- type retainers.
5. Disconnect the connector.
6. Disconnect the main emission vacuum control connector.
SECTION 303-
13: Evaporative Emissions 2003 Mustang Workshop Manual Klj . 1 ba
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7.
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or around any fuel- related component. Highly flammable mixtures are always
present and may be ignited. Failure to follow these instructions may result in personal
injury.
Disconnect the evaporative emission (EVAP) canister purge outlet tube.
8. Disconnect the EVAP return tube.
9. Remove the nuts and the EVAP canister purge valve. Klj . 2 ba
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REMOVAL AND INSTALLATION
Fuel Pressure Sensor
Removal
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel related components. Highly flammable mixtures are always present
and may be ignited. Failure to follow these instructions may result in personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before working on or disconnecting any of the fuel lines or fuel system
components, the fuel system pressure must be relieved. Failure to follow these instructions
may result in personal injury.
Mach I
1. Remove the air intake scoop. For additional information, refer to Section 303 - 12 .
All engines 2. Relieve the fuel pressure. For additional information, refer to Section 310 - 00 .
3. NOTE: The 4.6L (4V) Cobra engine is shown, the other engines are similar.
Disconnect the connector and the vacuum line. 4. Remove the bolts and the sensor. SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Material
Item Specification
Super Premium SAE 5W-20
Motor Oil
XO- 5W20- DSP or equivalent WSS-
M2C914-
A Klj . 1 ba
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DESCRIPTION AND OPERATION
Fuel System
Component Location
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel- related components. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury. SECTION 310-
00: Fuel System — General Information 2003 Mustang Workshop Manual Item Part Number Description
1 9341 Inertia fuel shutoff switch
2 9F593 Fuel injector
3 9155 Fuel filter
4 9002 Fuel tank
5 9H307 Fuel pump module and flange assembly Klj . 1 ba
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GENERAL PROCEDURES
Pressure Relief
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel- related components. Highly flammable mixtures are always present
and may be ignited, resulting in possible personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before servicing or disconnecting any of the fuel lines or fuel system components,
the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing
personal injury or a fire hazard.
1. Remove the Schrader valve cap and install the Fuel Pressure Gauge.
2. CAUTION: Open the manual valve slowly on the Fuel Pressure Gauge.
Relieve the fuel pressure. zPlace the fuel in a suitable container.
SECTION 310-
00: Fuel System — General Information 2003 Mustang Workshop Manual Special Tool(s)
Fuel Pressure Gauge
310-
012 (T80L-9974- B) Klj . 1 ba
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GENERAL PROCEDURES
Fuel Tank Draining
WARNING: Do not smoke or carry lighted tobacco or an open flame of any type when
working on or near any fuel- related components. Highly flammable mixtures are always present
and may be ignited, resulting in possible personal injury.
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the fuel tank filler cap.
3. Insert the hose guide into the filler neck.
4. NOTE: Insert the hose until the stop contacts the guide tube. If the stop does not contact the
guide tube, remove the hose and repeat the procedure.
Insert the chamfered end of the hose into the filler neck through the guide tube.
SECTION 310-
00: Fuel System — General Information 2003 Mustang Workshop Manual Special Tool(s)
Fuel Storage Tanker
164-R3202 or equivalent
Fuel Tank Drain Hose
310-
F013 Klj . 1 ba
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GENERAL PROCEDURES
Spring Lock Couplings
Disconnect
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel- related components. Highly flammable mixtures are always present
and may be ignited, resulting in possible personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before servicing or disconnecting any of the fuel lines or fuel system components,
the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing
personal injury or a fire hazard.
1. Relieve the fuel system pressure. For additional information, refer to Pressure Relief in this
section.
2. Remove the fuel tube clip.
SECTION 310-
00: Fuel System — General Information 2003 Mustang Workshop Manual Special Tool(s)
Disconnect Tool, Spring Lock
Coupling (3/8 inch yellow)
310-
D004 (D87L-9280- A) or
equivalent Disconnect Tool, Spring Lock
Coupling (1/2 inch green)
310-
D005 (D87L-9280- B) or
equivalent
Material Item Specification
SAE 5W-
20 Super Premium
Synthetic Blend Motor Oil
XO- 5W20- QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
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GENERAL PROCEDURES
Fuel Line Fittings —
Push Connect
Disconnect WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel- related components. Highly flammable mixtures are always present
and may be ignited, resulting in possible personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before servicing or disconnecting any of the fuel lines or fuel system components,
the fuel system pressure must be relieved to prevent accidental spraying of fuel, causing
personal injury or a fire hazard.
1. Relieve the fuel system pressure. For additional information, refer to Pressure Relief in this
section.
2. Disconnect the safety clip from the male hose.
3. Install the Fuel Line Disconnect Set and push into the fitting.
SECTION 310-
00: Fuel System — General Information 2003 Mustang Workshop Manual Special Tool(s)
Disconnect Tool, Spring Lock
Coupling
310-
S039 (T90T-9550- S)
Material Item Specification
SAE 5W-
20 Super Premium
Blend Motor Oil
XO- 5W20-QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
32003 Mustang Workshop Manual
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