Symptoms: Rough idling, loss of power, reduced fuel efficiency.
Causes: Faulty spark plugs, clogged fuel injectors, bad ignition coils, vacuum leaks.
2. Catalytic Converter Failure
Symptoms: Check engine light, reduced performance, strong exhaust odor.
Causes: Catalytic converters can fail due to high temperatures, contamination from other engine components, or simply age and wear.
3. Oxygen Sensor Failure
Symptoms: Check engine light, poor fuel efficiency, rough idling, hesitation during acceleration.
Causes: Oxygen sensors can fail due to contamination from oil or coolant, exposure to excessive heat, or simply age and wear.
4. Electronic Control Module (ECM) Failure
Symptoms: Check engine light, erratic engine performance, stalling, poor fuel efficiency.
Causes: ECMs can fail due to electrical problems, water damage, or software glitches.
5. Mass Air Flow (MAF) Sensor Failure
Symptoms: Check engine light, reduced performance, erratic idling, black smoke from the exhaust.
Causes: MAF sensors can fail due to contamination from dirt or oil, exposure to excessive heat, or simply age and wear.
6. Coolant Temperature Sensor Failure
Symptoms: Check engine light, overheating, reduced performance.
Causes: Coolant temperature sensors can fail due to electrical problems, damage from excessive heat, or simply age and wear.
7. Knock Sensor Failure
Symptoms: Check engine light, knocking or pinging noises from the engine, reduced performance.
Causes: Knock sensors can fail due to mechanical damage, electrical problems, or simply age and wear.
8. Transmission Control Module (TCM) Failure
Symptoms: Check engine light, erratic shifting, loss of power, stalling.
Causes: TCMs can fail due to electrical problems, water damage, or software glitches.
9. Fuel Pump Failure
Symptoms: Check engine light, difficulty starting, engine stalling, reduced power.
Causes: Fuel pumps can fail due to electrical problems, blockages in the fuel lines, or simply age and wear.
10. Evaporative Emissions (EVAP) System Failure
Symptoms: Check engine light, strong fuel odor, poor fuel efficiency.
Causes: EVAP systems can fail due to leaks in the fuel lines, canister failure, or faulty solenoid valves.
