Some 2005-07 Nissan Xterra and Pathfinder SUVs and Frontier pickup trucks with VQ40 engines built before Sept. 27, 2006, may produce a chirp or squeal from the engine compartment. Nissan says the noise usually appears at first startup, especially in cold or damp weather, or after extended run times of one hour or longer. Drive belt slippage is the likely cause.
To eliminate the noise, first check the alignment of the power steering pump pulley in relation to the other pulleys, adjusting the pump bracket as required. If the pulley alignment is on the money, replace the belt and belt tensioner with revised components, part No. 11720-EA200 and part No. 11955-EA20A, respectively.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has worked as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].