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Pinpoint Test C: Accessory Drive Bearing Hoot

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 CHECK THE ACCESSORY DRIVE IDLER AND TENSIONER PULLEY BEARINGS 
    • Carry out the Vehicle Cold Soak Procedure  .
    • Key in START position.
    • Place an EngineEAR probe directly on the pulley center post or bolt to verify which bearing is making the noise.
    • Key in OFF position.
    • Is either bearing making the noise? 
    1. Yes  : INSTALL a new pulley/idler. CARRY OUT the Vehicle Cold Soak Procedure  and TEST the system for normal operation.
    2. No  : CONDUCT a diagnosis on other suspect accessory drive components.
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