Ford Mustang Service Manual: Exhaust Manifold to Exhaust Gas Recirculation (EGR) Valve Tube - Mach I
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 weaken engine performance and shorten engine life.
The engine emission control consists of the:
- positive crankcase ventilation (PCV) system.
- exhaust gas recirculation (EGR) system.
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.
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 module (PCM) controls the EGR vacuum regulator solenoid . The EGR vacuum regulator solenoid controls the vacuum to the EGR valve. When the EGR valve opens, exhaust gas flows to the intake manifold. The EGR transducer measures the flow through the EGR valve to exhaust manifold tube and sends a signal to the powertrain control module. A metering orifice in the EGR valve to exhaust manifold tube restricts the flow rate when the EGR valve is open.
The PCV valve:
- controls the amount of ventilating air and blow-by gases going to the intake manifold.
- prevents a backfire from reaching the crankcase.
The EGR valve to exhaust manifold tube:
- connects the exhaust manifold to the EGR valve.
- has two tubes connecting to the EGR transducer for EGR flow monitoring.
The EGR transducer:
- monitors the EGR flow rate through the EGR valve to exhaust manifold tube.
- sends an EGR flow rate signal to the powertrain control module.
The EGR vacuum regulator solenoid uses input from the powertrain control module to change the EGR valve operation.
Engine Emission Control (DIAGNOSIS AND TESTING)
Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
Exhaust Manifold to Exhaust Gas Recirculation (EGR)
Valve Tube - Cobra
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 ...
Differential Pressure Feedback Exhaust Gas Recirculation
(EGR) System
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 ...
Other materials:
Assembly
Disassembly
1. Inspect the clutch cylinder thrust surfaces, piston bore and clutch plate
serrations for scores or
burrs. Minor scores or burrs may be removed with crocus cloth. Install a new
clutch cylinder if it
is badly scored or damaged.
2. Check the flu ...
Locking and unlocking
You can use the power door lock control or the remote control to lock and unlock
your vehicle.
Power Door Locks
The power door lock control is located on the driver and front passenger door
panels.
A. Unlock
B. Lock
Remote Control
You can use the r ...
Engine (Installation)
Engine
A modular engine is built around four modules:
the intake module
the cylinder head module (RH)
the cylinder head module (LH)
the lower engine module
While not all repairs can take advantage of the modular conc ...