Ford Mustang (1999-2004) Service Manual: Engine Ignition (Description and Operation)

Ford Mustang (1999-2004) Service Manual / Engine / Engine Ignition - 4.6L (2V) / Engine Ignition (Description and Operation)

Eight separate ignition coils (12029):

  • are mounted directly above each spark plug (12405).
  • are controlled by the powertrain control module (PCM) for correct firing sequence.

The spark plug:

  • changes the high voltage pulse into a spark which ignites the fuel and air mixture.
  • originally equipped on the vehicle has a platinum-enhanced active electrode for long life.

Crankshaft position (CKP) sensor (6C315):

NOTE: Initial engine ignition timing is set at 10 degrees +- 2 degrees before top dead center (BTDC) and is not adjustable. For additional information, refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

  • is a variable reluctance sensor triggered by a 36-minus-1 tooth trigger pulse wheel located on the crankshaft (6303) inside the engine front cover (6019).

The sine wave type signal generated from the crankshaft position sensor provides two types of information:

  • position of the crankshaft in 10 degree increments
  • the crankshaft speed (rpm)

The powertrain control module (PCM) (12A650) uses this information to determine ignition coil turn ON and turn OFF times and misfire detection.

Engine Ignition (DIAGNOSIS AND TESTING)

Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

    Engine Ignition - 4.6L (2V)
    General Specifications Torque Specifications ...

    Ignition Coil - Coil On Plug
    Removal 1. Disconnect the battery ground cable (14301). For additional information, refer to Section. 2. Remove the air cleaner outlet tube (9B659). For additional information, refer to Section ...

    Other materials:

    Starting System (Description and Operation)
    Starter Motor The starter motor is a 12-volt unit that has the starter solenoid mounted on the drive end housing and functions as follows: The current flows through the solenoid energizing coil until the solenoid plunger is at the end of its travel. The ...

    Idle Air Control (IAC) Valve - 4.6L (2V)
    Removal 1. Disconnect the battery ground cable. For additional information, refer to Section. 2. NOTE: Discard the idle air control (IAC) valve gasket. Remove the IAC valve. Disconnect the connector. Disconnect the hose. Remove the bolts, ...

    Cable Adjustment
    1. NOTE: Make sure that the range selector lever is tight against the rearward overdrive stop. Place the transmission range selector lever in the overdrive position. 2. Raise and support the vehicle. For additional information, refer to Section. ...