Warning:Refer toAssistant Driving Warning.
Interior windnoise is not heard when the window is lowered.Interior windnoise is caused by the air leaving the inside of thevehicle through a seal or a seam.
Tape over the relief valves to cause added air pressurewithin the vehicle.Test drive the vehicle and listen for windnoise or awhistle.Pull the vehicle over and make the temporary repairs usingmasking tape. If you cannot determine the source of the windnoise,perform one or more of the following diagnostic tests:Air Pressure TestSoap Suds or Bubble TestTracing Powder or Chalk Test
Exterior Windnoise
Checking Aftermarket AccessoriesCamshaft Timing Chain and Tensioner Removal (LAF, LEA, or LUK) Valvetrain Valvetrain Timing
Special ToolsEN-48953Camshaft Actuator Locking ToolFor equivalent regional tools, refer toSpecial Tools.Rotate the crankshaft to installEN-48953locking tool-(1).Note:Marking the chain and actuators is crucial to proceduresoperation. The camshaft actuator and timing chain must have oilremoved from th ...