Engine Ignition
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
This vehicle uses a coil-on-plug electronic ignition system. The coil-on-plug ignition system consists of the:
- PCM.
- crankshaft position (CKP) sensor.
- ignition coil-on-plug.
- spark plugs.
The PCM and the CKP sensor are also part of the electronic engine controls system. Refer to ELECTRONIC ENGINE CONTROLS article.
Eight separate ignition coils:
- are controlled by the PCM for the correct firing sequence.
- are mounted directly above each spark plug.
The spark plugs:
- change the high voltage pulse into a spark which ignites the fuel and air mixture.
- originally equipped on the vehicle have a nickel alloy electrode for long life.