SECTION 303-04A: Fuel Charging and Controls — 3.8L
DESCRIPTION AND OPERATION
Fuel Charging And Controls
The fuel injection supply manifold (9F792):
delivers fuel to the fuel injector.
receives fuel from the fuel supply line.
The throttle body (9E926):
controls air supply to the upper intake manifold (9424) by positioning the throttle plate.
connects the accelerator cable (9A758) and, if equipped, the speed control actuator cable
(9A825) to the throttle lever.
is not adjustable.
cannot be cleaned.
The fuel injector (9F593):
is electrically operated by the powertrain control module (PCM) (12A650).
has an internal solenoid that opens a needle valve to inject fuel into the lower intake manifold.
atomizes the fuel as the fuel is delivered.
is deposit-resistant. Do not clean.
The fuel pressure relief valve (9H321):
is used to inspect and relieve fuel pressure.
2003 Mustang Workshop Manual