* Fuel System Issues:
* Fuel pump failure: The fuel pump might be failing to deliver fuel to the engine. This is a common cause of sudden engine death.
* Clogged fuel filter: A clogged filter restricts fuel flow, leading to engine starvation.
* Fuel pressure regulator malfunction: A faulty regulator might not maintain the correct fuel pressure.
* Bad fuel injectors: If the injectors aren't spraying fuel properly, the engine won't run.
* Ignition System Problems:
* Crankshaft Position Sensor (CKP) failure: This sensor tells the computer the engine's rotational position; a failure prevents the engine from firing.
* Cam Position Sensor (CMP) failure: Similar to the CKP sensor, a malfunctioning CMP prevents proper ignition timing.
* Ignition coil failure: This component provides the high voltage needed for spark plug ignition. A faulty coil will lead to misfires or a complete lack of spark.
* Distributor cap and rotor (if applicable): Wear or damage can interrupt the spark delivery. (Some 1995 LeBarons might still have distributors; others might have coil-on-plug ignition.)
* Spark plugs and wires: Worn or damaged spark plugs and wires can prevent proper ignition.
* Electrical Issues:
* Alternator failure: While this usually results in warning lights before complete failure, a sudden alternator death can cause the engine to die.
* Battery issues: A completely dead battery will prevent the engine from starting, but this is less likely to cause a running engine to suddenly stop unless it's a very weak battery already nearing its end.
* Loose or corroded connections: Poor electrical connections can interrupt the flow of power to vital engine components.
* Other Potential Problems:
* Computer/PCM (Powertrain Control Module) failure: While less common, a faulty PCM can cause a wide range of problems, including sudden engine shutdowns.
* Vacuum leaks: Severe vacuum leaks can disrupt the engine's operation, potentially causing it to stall.
To diagnose the problem: You'll need to have a mechanic check the vehicle. They'll likely start by checking the basics (fuel pressure, spark, battery voltage) and then move on to more complex diagnostics using a scan tool to read trouble codes from the PCM. Many auto parts stores offer free diagnostic checks.
