Pinpoint Test E: Clutch Related Vibrations

Manual Transaxle and Clutch

Pinpoint Tests

PINPOINT TEST E: CLUTCH RELATED VIBRATIONS

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E1 CHECK FOR ENGINE COMPONENT GROUNDING

- Raise and support the vehicle.
- Check the engine mount interlocks for grounding on the body or frame.
- Check the exhaust manifold or other engine component grounding on the body or frame.
- Is there evidence of grounding on body or frame?

Yes
REPAIR any components as necessary. TEST the system for normal operation.

No
GO to E2.

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E2 CHECK FOR ACCESSORY DRIVE VIBRATIONS

- Feel accessory vibration at clutch engage/disengage when engine torque changes.
- Disconnect the accessory drive belt and check for vibration.
- Does the vibration stop when the drive belt is removed from the engine?

Yes
REPAIR or INSTALL new accessory drive belt components. REFER to Accessory Drive Accessory Drive Belt.

No
GO to E3.

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E3 CHECK FOR RELEASE BEARING NOISE

- Start engine.
- Press and hold clutch pedal.
- Is a whirring, grating or grinding noise present?

Yes
INSTALL a new clutch slave cylinder. REFER to Clutch Controls Removal and Replacement. TEST the system for normal operation.

No
GO to E4.

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E4 INSPECT THE FLYWHEEL

- Remove the transaxle. REFER to Manual Transaxle/Transmission Removal and Replacement.
- Inspect for loose flywheel bolts.
- Carry out flywheel runout check.
- Is the flywheel OK?

Yes
DIAGNOSE engine vibration concern. REFER to Manual Transaxle/Transmission and Clutch - General Information Testing and Inspection.

No
TIGHTEN the flywheel bolts or INSTALL a new flywheel. REFER to Engine - 1.6L Flywheel. TEST the system for normal operation.

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