Engine Ignition
WARNING: This page is about a different car, the 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The electronic ignition (EI) system consists of the:
- crankshaft position sensor.
- ignition coil.
- spark plug wires.
- spark plugs.
The crankshaft position sensor:
- is a variable reluctance sensor.
- is mounted on the engine front cover.
- is triggered by a 36-minus-1 tooth trigger wheel located on the crankshaft pulley and damper.
- provides base timing and crankshaft speed (rpm) to the powertrain control module (PCM).
Refer to ELECTRONIC ENGINE CONTROLS article.
The ignition coil:
- is controlled by the PCM.
- fires 2 spark plugs simultaneously.
- is mounted on the RH valve cover.
The spark plug wires:
- carry high voltage pulses from the ignition coil to the spark plugs.
The spark plugs:
- ignite the fuel and air mixture.
- are nickel enhanced for long life.