Ford Mustang (1999-2004) Service Manual: Typical Vehicle Emission Control Information (VECI) Decal
The Vehicle Emission Control Information (VECI) decal shows:
- the components of the emission control system.
- the correct vacuum hose routing.
- the color stripe of the vacuum hoses.
The PCV system uses the intake manifold vacuum to ventilate the crankcase and return the fumes to the intake manifold for combustion.
Engine Emission Control (Description and Operation)
CAUTION: Do not remove any part of the engine emission control system.
Operating the
engine without the engine emission control system will reduce fuel economy and
engine
ventilation. This will weak ...
EGR System Components
The EGR system returns a portion of the exhaust gas to the intake manifold to
reduce the combustion
temperature. This results in lower nitrous oxide formation.
The powertrain control modul ...
Other materials:
Component Tests
Pressure Test
1. Turn the engine OFF.
2. WARNING: Never remove the pressure relief cap under any conditions
while the
engine is operating. Failure to follow these instructions could result in damage
to the
cooling system or engine and/or personal injury. To ...
Fuel quality
Note: Use of any fuel other than those recommended may cause
powertrain damage and a loss of vehicle performance; repairs may not be
covered under warranty.
Choosing the Right Fuel
Use only unleaded fuel or unleaded fuel blended with a maximum of
15% ethanol. ...
Component Tests
Idle Air Control (IAC) Valve
1. Open the hood.
2. NOTE: Key symptom is elevated idle speed while noise is occurring.
NOTE: "Snapping" the throttle can induce the noise.
Verify the condition by operating the vehicle for a short time.
3. Inspect the IAC valv ...
