* Crankshaft Position Sensor (CKP): A faulty CKP sensor can prevent the engine from running consistently. If it's failing intermittently, this could explain the behavior.
* Mass Airflow Sensor (MAF): A malfunctioning MAF sensor can cause improper fuel/air mixture leading to stalling.
* Ignition System: While less likely given the initial run time, a weak coil, distributor issues (if it has one), or failing ignition components could contribute.
* Fuel Pressure Regulator: This component maintains proper fuel pressure. A failing regulator could cause inconsistent fuel delivery.
Troubleshooting Steps (Proceed with caution and be aware of potential hazards):
1. Check Fuel: The most basic check. Make sure the car has enough fuel.
2. Listen for the Fuel Pump: When you turn the key to the "on" position (without starting), you should hear the fuel pump prime for a few seconds. If you don't hear it, the pump might be faulty.
3. Check the Fuel Filter: A clogged fuel filter will restrict fuel flow. It's a relatively inexpensive part to replace.
4. Check for any Error Codes: A 1993 Cadillac Eldorado might have an OBD-I system. You might need a code reader or scanner to get diagnostic trouble codes (DTCs) from the car's computer, giving you more direction.
Important Note: Without proper diagnostic tools and mechanical experience, troubleshooting fuel system issues can be dangerous. Fuel is flammable, and working with the car's electrical system requires caution. If you're not comfortable working on cars, it's best to take it to a qualified mechanic. They'll have the tools and expertise to properly diagnose and repair the problem safely.
