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Audi, A6, C4, 2.3

Audi , A6 , C4 , 2.3 (1994-) Common Issues

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  1. Crankshaft position sensor failure
  2. Faulty oxygen sensor(s)
  3. Worn or loose serpentine belt
  4. Spark plug wire separation or wear
  5. Ignition module failure
  6. Coolant leaks from the radiator, hoses, or water pump
  7. Vacuum hose failures or blockages
  8. Faulty Mass Airflow Sensor (MAF)
  9. Catalytic converter clogging or failure
  10. Transmission solenoid pack failure
  11. Rear main seal oil leak
  12. Timing belt failure (high mileage vehicles)
  13. Oil pan gasket leaks
  14. Starter motor failure
  15. Alternator failure
  16. Fuel injector issues or clogged fuel injectors
  17. Intermittent and unpredictable ECU problems
  18. Ignition coil overheating
  19. Rear axle bearing wear or play
  20. Head gasket leak (high mileage vehicles)
  21. Oil pressure sensor malfunction
  22. Faulty Idle Air Control Valve (IACV)
  23. PCV system clogging or failure
  24. Intake manifold vacuum leaks
  25. Fuel pump failure
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