Pinpoint Test F: Clutch Related Vibrations
WARNING: This page is about a different car, the 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- F1 CHECK FOR ENGINE COMPONENT GROUNDING
- With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING AND LIFTING article.
- Check the engine and transmission mounts for grounding.
- Check for exhaust manifolds or other engine components grounding on the body or frame.
- Is there evidence of grounding on the body or frame?
- YES : REPAIR components as necessary. TEST the system for normal operation.
- NO : Go to F2.
- F2 CHECK FOR ACCESSORY DRIVE VIBRATIONS
- Remove the accessory drive belt.
- Key in START position.
- Does the vibration stop when the accessory drive belt is removed from the engine?
- YES : REFER to ACCESSORY DRIVE article to diagnose the accessory drive belt components.
- NO : STOP the engine and REINSTALL the drive belt. Go to F3 .
- F3 CHECK FOR RELEASE BEARING NOISE
- Key in START position.
- Depress and hold the clutch pedal.
- Is a whirring, grating or grinding noise present only when pedal is pushed?
- F4 INSPECT THE FLYWHEEL
- Key in OFF position.
- Remove the transmission. Refer to MANUAL TRANSAXLE/TRANSMISSION article.
- Remove the clutch pressure plate and clutch disc. Refer to CLUTCH article.
- Inspect the flywheel. Refer to the Flywheel Runout Check in this article.
- Is the flywheel OK?
- F5 INSPECT THE PILOT BEARING
- Inspect the pilot bearing for wear or damage.
- Is the pilot bearing worn or damaged?
- F6 CHECK FOR PRESSURE PLATE IMBALANCE
- Support the engine securely.
- Operate the engine with the transmission removed.
- Is the vibration still present?
CAUTION: Failure to support the engine correctly could result in damage to the vehicle.- YES : REFER to NOISE, VIBRATION AND HARSHNESS article to diagnose the engine vibration concern.
- NO : INSTALL a new clutch pressure plate. REFER to CLUTCH article. TEST the system for normal operation.