* Fuel supply:
- Clogged fuel filter
- Malfunctioning fuel pump
- Low fuel pressure
* Ignition system:
- Faulty ignition coil
- Worn spark plugs
- Bad ignition switch
* Electrical issues:
- Loose battery cables
- Corroded battery terminals
- Faulty alternator
- Failing voltage regulator
* Mechanical problems:
- Faulty throttle body
- Faulty fuel injector
- Vacuum leaks
- Worn valve seals
* Computer issues:
- Software glitches
- Faulty sensors (mass air flow sensor, oxygen sensor, etc.)
Diagnosis and repair:
1. First, check the fuel system. Start with the fuel filter and fuel pump.
2. If the fuel system seems okay, check the ignition system, starting with the ignition coils and spark plugs.
3. Next, inspect the electrical system. Check the battery, alternator, and voltage regulator.
4. If the electrical system appears to be in order, check the mechanical components.
5. Finally, consider computer issues. Scan for codes and check the sensors.
