Manual Transmission Malfunctions

Noise in neutral position with engine running

• Wear of gearbox input shaft bearings (the manifestation of noise when the clutch pedal is released and its disappearance when the pedal is depressed) (Chapter 7A).*
• Clutch release bearing wear (noise when the clutch pedal is pressed, with a possible decrease when the pedal is released) (Chapter 6).

Noise when shifting into one of the gears

• Worn, damaged or broken gear teeth (Chapter 7A).*

Difficulty shifting gears

• Clutch failure (Chapter 6).
• Worn or damaged shift linkage (Chapter 7A).
• Incorrect adjustment of the leverage of the shift mechanism (Chapter 7A).
• Synchronizer wear (Chapter 7A).*

Vibration

• Lack of oil (Chapter 1).
• Bearing wear (Chapter 7A).*

Spontaneous disengagement of gears

• Worn or damaged shift linkage (Chapter 7A).
• Incorrect adjustment of the leverage of the shift mechanism (Chapter 7A).
• Synchronizer wear (Chapter 7A).*
• Gear selector fork wear (Chapter 7A).*

Oil leaks

• Transmission oil leaking from differential outlet seal (Chapter 7A).
• Leakage through body joints (Chapter 7A).*
• Oil leakage through the cuff of the input shaft (Chapter 7A).
• Oil leakage through the cuff of the selector axis (Chapter 7A).
• Oil leakage through the O-ring of the speedometer drive gear (Chapter 7A).

* Although the above troubleshooting is beyond the power of the owner of the car, however, the information provided should help you identify their causes in order to clearly state the situation to a professional auto mechanic.