Clutch Slipping

Cause	Actions
DEFINITION: The clutch does not engage completely after the pedal is released, after shifting gears or the clutch slips during maximum engine loads, such as climbing hills or high vehicle speeds. Clutch slipping is identified by increase in engine RPM without increase in vehicle speed. Review the Symptoms - Clutch and perform the necessary inspections.
Incorrect clutch pedal height, not allowing the clutch master cylinder to return.	Adjust the clutch pedal position switch. Refer to Clutch Pedal Position Sensor Replacement .
The clutch pedal return spring is broken or missing.	Replace the clutch pedal return spring, if equipped. Refer to Clutch Pedal Return Spring Replacement (Tension Spring) and Clutch Pedal Return Spring Replacement (Coil Spring) .
The clutch pedal is binding or sticking.	Clear away any items that may be contacting the pedal. Inspect the pedal bushings for ease of movement. Replace the clutch pedal if it is faulty. Refer to Brake, Accelerator and Clutch Pedal Replacement .
Clutch master cylinder binding or seized.	Replace the clutch master cylinder. Refer to Clutch Master Cylinder Replacement .
Clutch actuator cylinder binding or seized.	Replace the clutch actuator cylinder. Refer to Clutch Actuator Cylinder Replacement .
Kinked or damaged clutch actuator cylinder front pipe.	Inspect for the correct routing of the clutch actuator cylinder front pipe. Route the clutch actuator cylinder front pipe properly. Inspect for loose or faulty engine mounts that may allow the clutch actuator cylinder front pipe to be kinked or pinched. Repair or replace faulty engine mounts. For 1.4L gasoline engine mount. Refer to Engine Mount Replacement - Right Side . For 1.8L gasoline engine mount. Refer to Engine Mount Replacement - Right Side . Replace the clutch actuator cylinder front pipe if it is damaged. Refer to Clutch Actuator Cylinder Front Pipe Replacement .
Grease or oil contamination of the clutch disc.	Repair the source of the oil leak. Repair the source of the grease leak. Clean the contamination from the clutch components. If contaminants cannot be removed, replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement (1.4L LUV) and Clutch Pressure and Driven Plate Replacement (1.8L LUW and LWE) .
Oil-soaked clutch disc.	Correct the leak at its source and install a new clutch disc. Refer to Clutch Pressure and Driven Plate Replacement (1.4L LUV) and Clutch Pressure and Driven Plate Replacement (1.8L LUW and LWE) .
Weak diaphragm spring.	Replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement (1.4L LUV) and Clutch Pressure and Driven Plate Replacement (1.8L LUW and LWE) .
Driven plate that is not seated.	Start the engine 30 - 40 times. Do not overheat the engine.
Driven plate is overheated.	Allow the driven plate to cool down.
Worn or damaged flywheel.	Replace the engine flywheel: For 1.4L gasoline engine. Refer to Engine Flywheel Replacement (Manual Transmission) . For 1.8L gasoline engine. Refer to Engine Flywheel Replacement (Manual Transmission) .
Worn clutch disc facing.	Replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement (1.4L LUV) and Clutch Pressure and Driven Plate Replacement (1.8L LUW and LWE) .
Burnt or glazed clutch discs.	Replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement (1.4L LUV) and Clutch Pressure and Driven Plate Replacement (1.8L LUW and LWE) .
Input shaft splines worn.	Replace the transmission. Refer to Transmission Replacement .
Improper resurfacing of the flywheel.	Replace the flywheel if it has been improperly resurfaced, allowing contact of the clutch disc hub or insufficient clamping load of the pressure plate. For 1.4L gasoline engine. Refer to Engine Flywheel Replacement (Manual Transmission) . For 1.8L gasoline engine. Refer to Engine Flywheel Replacement (Manual Transmission) .