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WHY DOES MY 1991 Buick Riviera stalls?

Possible Causes:

- Engine:

- Faulty fuel injector

- Weak spark plug

- Clogged fuel filter

- Dirty mass airflow sensor

- Electrical:

- Faulty ignition switch

- Bad ignition coil

- Corroded battery terminals

- Loose or broken wiring

- Fuel System:

- Clogged fuel line or fuel pump

- Faulty fuel pressure regulator

- Transmission:

- Low transmission fluid

- Faulty transmission solenoid

- Computer Problems:

- Faulty engine control module (ECM)

- Bad oxygen sensor

Troubleshooting:

- Check the fuel pressure.

- Inspect the spark plugs and wires.

- Clean the mass airflow sensor.

- Check the ignition system.

- Inspect the fuel filter and fuel lines.

- Check the transmission fluid level and condition.

- Scan for any diagnostic trouble codes (DTCs).

- Check for any loose or damaged wiring.

If the problem persists, consult with a qualified mechanic for further diagnosis and repair.