For 1990-2009 cars

Complaint/Condition | Possible Causes | Corrections
--- | --- | ---
Clutch fails to release | The pedal travel is short. The object interferes with the pedal. | Move the object.
Hydraulic system failure | Follow the Clutch Hydraulic System Diagnosis procedures and replace the faulty components as necessary.
The disc hub is binding. | Clean the hub and shaft, lightly grease the shaft with high-temp grease P/N 21005995 or equivalent, and replace if necessary.
The clutch disc is warped or bent. | Inspect the clutch disc and replace if necessary.
The pressure plate assembly to flywheel bolts are loose. | Torque the bolts to specification and verify operation.
The pressure plate assembly is faulty or damaged. | Inspect the pressure plate assembly and replace if necessary.
The input shaft splines are worn or damaged. | Inspect the input shaft and replace if necessary.
No pressure or very little resistance in the clutch pedal | Hydraulic system failure | Follow the Clutch Hydraulic System Diagnosis procedure and replace the faulty components as necessary.
Clutch feels spongy when depressed | Hydraulic system failure | Follow the Clutch Hydraulic System Diagnosis procedure and replace the faulty components as necessary.
Pedal effort high for the entire pedal travel | Hydraulic system failure | Follow the Clutch Hydraulic System Diagnosis procedure and replace the faulty components as necessary.
The clutch facing is worn. | Inspect the clutch disc and replace if necessary.
The release bearing is binding. | Inspect the slave cylinder release bearings, and replace the slave cylinder if necessary.
The pressure plate assembly is damaged or faulty. | Inspect the pressure plate assembly and replace if necessary.
The pedal bushings are dry or worn. | Lubricate the bushings with lithium grease, and replace the pedal if necessary.
High clutch engage point | The clutch facing is worn. | Inspect the clutch disc and replace if necessary.
Clutch is slipping | Oil soaked clutch facing | Identify/seal the source of the oil leak, and replace the clutch disc.
The clutch facing is torn. | Replace the clutch disc.
The clutch facing is worn. | Inspect the clutch disc and replace if necessary.
The clutch facing is burnt or glazed. | Inspect the clutch disc and replace if necessary.
The pressure plate assembly to flywheel bolts are loose. | Torque the bolts to specification and inspect the clutch disc. Replace if necessary.
The pressure plate assembly or flywheel is faulty or damaged. | Inspect the components and replace if necessary.
Hydraulic clutch failure | Follow the Clutch Hydraulic System Diagnosis procedure and replace the faulty components as necessary.
Clutch is grabbing, chattering, or shuddering | The powertrain mounts are misadjusted or loose. | Torque the bolts to specification and inspect.
The clutch disc is warped or bent. | Inspect the clutch disc and replace if necessary.
Clutch disc damper failure | Inspect the clutch disc and replace if necessary.
The pressure plate assembly or flywheel is warped, faulty, or damaged. | Inspect the components and replace if necessary.
The clutch disc hub is binding. | Clean the hub and shaft, lightly grease the shaft with high-temp grease P/N 21005995 or equivalent, and replace if necessary.
Light oil or grease on the clutch facing | Identify and seal the source of the leak and replace the clutch disc.
The clutch facing is burnt or glazed. | Replace the clutch disc.
The pressure plate to flywheel bolts are loose. | Torque the bolts to specification and inspect the clutch disc. Replace if necessary.
The input shaft splines are worn or damaged. | Inspect the input shaft and replace if necessary.
The release bearing is binding. | Inspect the slave cylinder release bearing, and replace the slave cylinder if necessary.
Clutch is noisy when disengaging | The release bearing is faulty. | Inspect the release bearing and replace if necessary.
The pedal bushing is worn or dry. | Lubricate the bushings with lithium grease. Replace the pedal if necessary.
Clutch is noisy when engaging | The release bearing is faulty. | Inspect the slave cylinder release bearing, and replace the slave cylinder if necessary.
The pedal bushing is worn or dry. | Lubricate the bushings with lithium grease. Replace the pedal if necessary.
Clutch pedal is squeaking | The pedal bushing is worn or dry. | Lubricate the bushings with lithium grease. Replace the pedal if necessary.
The clutch master cylinder push rod requires lubrication. | Check and lubricate the clutch master cylinder push rod where it attaches to the clutch pedal and where it enters the master cylinder.
Hydraulic system failure | Follow the Clutch Hydraulic System Diagnosis procedure and replace the faulty components as necessary.
Clutch pedal is buzzing/growling | Hydraulic system failure | Follow the Clutch Hydraulic System Diagnosis procedure and replace the faulty components as necessary.
The pressure plate assembly to flywheel bolts are loose. | Torque the bolts to specification and inspect the clutch disc. Replace if necessary.