* Ignition switch: These wear out over time and can fail to properly send power to the rest of the system.
* Ignition coil: A weak or failing coil won't produce the high voltage needed to fire the spark plugs.
* Distributor cap and rotor: These parts can become corroded or worn, preventing the spark from reaching the plugs effectively. Cracks in the cap are particularly common.
* Spark plugs and wires: Worn or fouled spark plugs or damaged wires will hinder or prevent the spark.
* Neutral safety switch (NSS): This switch prevents starting unless the transmission is in park or neutral. A faulty NSS will prevent the starter from engaging.
* Battery and cables: While not strictly part of the ignition system, a weak battery or corroded cables can prevent enough current from reaching the starter motor.
While other electrical issues *can* prevent starting (like problems with the starter solenoid or a bad alternator), a failing ignition system is statistically the most likely culprit in a no-start situation on a vehicle of that age. Always check the simplest things (battery, cables) first, then move to the ignition components.
