Download 2009 Ford Escape INTERMITTENT CYLINDER HEAD CAMSHAFT KNOCK/ THUMP NOISE – ISSUE Some 2009 Escape and Mariner vehicles, equipped with 3.0L engine, may exhibit an intermittent knocking or thumping type noise from the cylinder head. After engine temperature reaches 210-220 °F (99-104 °C), the noise is typically heard from the rear of the engine as the vehicle comes to a stop. An example would be coming to a stop at the end of a highway exit ramp. Noise will continue 45-60 seconds and then diminish. Noise will occur again once engine reaches 210-220 °F (99-104 °C) and vehicle comes to another stop. ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE 1. Is noise a 45-60 second knock/thump from a hot engine as the vehicle comes to a stop? a. Yes – Go to Step 2. b. No – Stop as this procedure does not apply. Proceed with normal Workshop Manual (WSM), Section 100-04 diagnostics. 2. Using Chassis Ears, isolate the noise to Right Hand (RH) (Bank 1) or Left Hand (LH) (Bank 2) cylinder head. Noise is typically heard as 45-60 second knock/thump as the vehicle comes to a stop after engine reaches 210-220 °F (99-104 °C).