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Pinpoint Test A: Clutch Vibration

WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK ENGINE COMPONENTS FOR GROUNDING 
    • NOTE: Make sure the clutch is the cause of the vibration concern. The vibration should occur during clutch operation. The clutch can also be difficult to engage or disengage. Eliminate all related systems before checking the clutch components.
    • NOTE: Check the driveline angles and driveshaft runout before disassembling the clutch system. Refer to DRIVELINE SYSTEM - GENERAL INFORMATION .
    • Check the powertrain/drivetrain mounts, exhaust manifolds or other engine components for grounding on the chassis.
    • Are any mounts or engine components grounded? 
    • Yes:  REPAIR as necessary. TEST the system for normal operation.
    • No:  GO to A2  .
  2. A2 CHECK FOR LOOSE CLUTCH PRESSURE PLATE BOLTS 
    • Check for loose clutch pressure plate bolts. Inspect the clutch pressure plate for damage or for material between the pressure plate and flywheel.
    • Are there any loose bolts or damage? 
    • Yes:  TIGHTEN the bolts to specifications or if damaged, INSTALL a new clutch pressure plate. REFER to CLUTCH . TEST the system for normal operation.
    • No:  GO to A3  .
  3. A3 CHECK THE CLUTCH DISC SPRINGS 
    • Check for worn, broken or loose clutch disc springs.
    • Are the clutch springs worn, broken or loose? 
    • Yes:  INSTALL a new clutch disc. REFER to CLUTCH . TEST the system for normal operation.
    • No:  GO to A4  .
  4. A4 CHECK THE CLUTCH DISC SPLINES 
    • Inspect the clutch disc splines for damage or wear.
    • Is there damage or wear? 
    • Yes:  INSTALL a new clutch disc. REFER to CLUTCH . TEST the system for normal operation.
    • No:  GO to A5  .
  5. A5 CHECK THE FLYWHEEL BOLTS 
    • Check for loose flywheel bolts.
    • Are the bolts loose? 
  6. A6 CHECK THE FLYWHEEL SURFACE 
    • Yes:  INSTALL a new flywheel. REFER to ENGINE - 5.4L (3V) for 5.4L engines, ENGINE - 6.8L (3V) for 6.8L engines or IN-VEHICLE REPAIR for 6.4L engines. TEST the system for normal operation.
    • No:  Clutch system normal. CONDUCT a diagnosis on other suspect systems.
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