Engine Ignition

The electronic ignition (EI) system for the 2.3L engine consists of the following components:

• Ignition coil
• Spark plugs
• Spark plug wires
• Crankshaft position (CKP) sensor
• Camshaft position (CMP) sensor

The crankshaft position (CKP) 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 ignition timing and crankshaft speed (RPM) to the powertrain control module (PCM).

Refer to ELECTRONIC ENGINE CONTROLS for removal and installation of the CKP sensor.

The ignition coil:

• Is controlled by the PCM.
• Fires two spark plugs simultaneously.

The spark plug:

• Ignites the fuel and air mixture.

The spark plug wire:

• Carries high voltage pulses from the ignition coil to the spark plugs.