Pinpoint Test B: Accessory Drive Bearing Hoot
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- B1 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?
Yes: INSTALL a new pulley/idler. REFER to REMOVAL AND INSTALLATION - 2.3L , REMOVAL AND INSTALLATION - 3.0L or ACCESSORY DRIVE - HYBRID . CARRY OUT the Vehicle Cold Soak Procedure and TEST the system for normal operation.
No: CONDUCT a diagnosis of other suspect accessory drive components.