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Replaced battery and alternator on 97 mercury sable it keeps stalling what is the problem?

Potential Causes

- Incorrect battery/alternator installation.

- Faulty wiring or connections (e.g., loose/corroded wires).

- Issues with the fuel system (e.g., clogged fuel filter, faulty fuel pump).

- Problems with the ignition system (e.g., worn spark plugs, faulty coil packs).

- Failing sensors (e.g., oxygen sensor, mass airflow sensor).

- Mechanical issues (e.g., vacuum leaks, worn engine components).

Recommended Actions

- Verify the battery/alternator installation follows the manufacturer's guidelines, including proper wire connections.

- Inspect and tighten any loose or corroded electrical connections related to the battery, alternator, and other electrical components.

- Check your fuel filter for clogs and fuel pump for proper functioning.

- Examine your spark plugs for wear and replace them if necessary. Inspect and test the coil packs.

- Diagnose and replace any failing or malfunctioning sensors (oxygen sensor, mass airflow sensor, etc.)

- Look for vacuum leaks and repair/replace damaged vacuum lines or components.

- Have a qualified mechanic inspect for underlying mechanical issues, such as worn engine components.

Note: If you feel unsure or uncomfortable performing any of the above checks or repairs, consult a professional automotive technician for assistance to avoid further damage to your vehicle.